You'll have to excuse my ignorance, but I have no idea what an LBV is. I do know that many 119's, notably the ones sold a Walmart come with a nylon sheath. I'm sure I have one somewhere, but I couldn't locate it for a picture.
That's the first time I've seen the term fit and finish applied to a sheath, but as well as I remember the knives fit fine in them. They have a plastic insert in them to keep the edge away from the nylon.
I've seen alot of custom "leather" sheaths made for them, but I personally have never seen a custom made nylon. Most folks go the other way.