Welcome Lawrence!
A good leather sheath such as a Skystorm should work quite well for you.
And if you wanted to upgrade your nylon sheath, the short SpecOps works very well. It's a nice sheath.
As others have mentioned, the factory webbing will stretch out over time and should remedy your situation.
Hook and loop might be an option too if that snap won't loosen up for you.
Lot's of options out there!
As of now I've ordered a Skystorm sheath only for my BK7; which incidentally will probably end up a better hiking option for me than the BK22. I couldn't really tell from Amazon that the smaller 5-inch BK22 was actually heavier than the BK7 (15 ounces to the BK7's 13.5 ounces). I do have at least one "custom" sheath for the BK22 on order. Whether it turns out to be "good" or not remains to be seen. And as I mentioned earlier I did put in a bid on a BK2 with three what look like home-made leather sheaths. Whether the seller accepts my offer remains to be seen.
Perhaps every year about this time, when it is too hot to do a lot of hiking, I review my gear and just like some of the YouTube commentators always find something else to buy. I have been very impressed by what I've read about the BK7 and BK9, but after getting the BK7 decided that that I wasn't likely to want to take the BK9 on a hike (which doesn't mean I don't want one at some point) and so got a BK22. But like some YouTube commentator also said, I won't get a knife (or gun) unless I can think of a use for it. So why do I "need" a BK7, and this will also explain why I need to have it (or whatever knife I'm carrying) on my belt:
I retired to the foothills of the San Jacinto Mountains in Southern California, because one of my main hobbies was hiking. I wanted a nearby hiking area but also access to good hiking trails further away. The nearby area is the usually dry San Jacinto River bed. I hike with a Rhodesian Ridgeback (Ben) and my wife's Schnoodle (Duffy). We've pretty much gotten used to the coyotes that we see almost everytime we go down there. Virtually no one else goes down in the brush where we hike -- except the coyotes. Do I anticipate having to fight off coyotes with a knife? Almost certainly not. They have gotten used to us and we them, but things could change. We are in drought conditions now. If that affected the coyotes they might be tempted try and drag off Duffy. Some state people checking for an infectious disease a couple of years ago told me of a mountain lion that came down from the mountain and there are bear up there so animals might come down to cross the (dry) river to drink from the little reservoirs on the other side. I'm not worried about these hypothetical situations, but at the same time I don't want to be caught unprepared if something does happen.
When I was trying to go as light as possible a few months back I pulled out my old Kershaw 1010BK. It is amazingly light, 8 ounces counting the sheath, and while that might seem to be an ideal knife for a hiker that wants to go light, I had no confidence in it. I've never heard of one breaking, but holding it didn't inspire me with confidence. Maybe it would be okay, but why trust myself (and my dogs) to it if I didn't need to. I've got other knives and while I don't really want to discuss them all, I found several people (on YouTube) waxing eloquently over the BK7 and BK9 and as I said I ended up buying the BK7 and BK22. The knives themselves do inspire confidence, the BK7 more than the BK22, perhaps, but I'd be happier taking either one into any of the hypothetical situations I've considered, than most of my other knives -- as soon as I can get some suitable sheaths.
I hate to get into all this detail because my interests are neither "survival" (at least not "survival" as its portrayed in the YouTube videos I've watched) or bushcraft. I have a wide selection of knives I can take hiking and now (in the BK7) I have one to take if I am imagining a really really really serious (hypothetical) threat. The BK7 will be my uberknife.
I have tried a number of the Spec Ops sheaths over the years, for guns and knives, and have never cared for them. I prefer soft material on my belt. One of the reasons is noise. A Marine was (probably still is) trained not to carry gear that is going to rattle and alert the enemy he is approaching. I don't expect to encounter "enemies" on my hike, but I do like to hear other hikers before they hear me (especially if they have dogs, so I can put Ben on a leash); so the elimination of distracting noises enables me to hear what's out there a little better. What would bang into a Spec Ops sheath? I carry a few things that might, cameras, hiking sticks, branches that we brush by. Also, I don't like the feel or operation of the Spec Ops sheaths -- this is just personal preference.
I did think the straps on the BK22 "might" stretch out over time, but bear in mind that I don't particularly like that sort of sheath to begin with. If it functioned perfectly I would have used it until I got the custom sheath for the BK7, but since it didn't work I'm going to set the BK22 aside and take one of my older knives hiking. I have plenty of them; so I am not in trouble.
Thanks,
Lawrence