Depends on what youre calling big? Big to me would be something I'd belt carry. If we're talking folders around 4" they go in their own front pocket, sometimes with my front pocket wallet assuming I'm not carrying it in my back pocket.
I like character, but I don't want unnecessary "character" on them. I'm fine with character on my knives from use but keys, change, concrete or gravel isn't use imo its neglect. Same goes for my phone as far as that goes. I have hard users fixed and folding, my nicer blades, specifically traditionals ain't it.
What other people do with theirs is there business.
I don't mind a belt sheath folding knife, but don't currently own any. Wouldn't object though.
A knife slip might remedy some of my worry, but I have few of those as well.
This is what works for me.