Eh, they work for the intended purpose of what a sheath is supposed to do.
Keep the knife with you.
Protect you from the blade.
In that regards, they work.
Are they the toughest out there? No.
Are they the best out there? No.
Are they the most stylish? No.
But they do come with a pouch, and will work.
Factor in, you can in the upwards of $400 for a knife from a custom maker, and it doesn't come with a sheath at all. So........
The idea behind BKT is to bring you the best, highest quality tool for the money you are spending. What doesn that mean? It means, Basic. Basic colors (black) basic sheath (function), basic price (lower than comparable blades).
You want more, get ready to pay more. If you're gonna pay more for the extras from the factory, you will be paying the same extras on the secondary market to get what you want.
I wish they could have kickass sheaths, colored blades, micarta handles, but by the time you do that, a BK2 is gonna cost you $130, as opposed to the $65 it costs now.
You gotta pay to play, but I promise, a BKT knife and sheath, will work just fine, right out of the box.
Moose