Thanks for the recommend Flexxx!
The sheath options that ESEE offers are pretty awesome, been incorporated in my designs from the begining. Not sure exactly what you're looking for though since the ESEE-3 factory sheath only matches up with the ESEE-3/4 Molle Back, but if you want to use the ESEE-Acc. Pouch you're in the right place
Here's a BK11 in a Pouch-Sheath. I like using a Kydex belt-loop instead of the Molle Back because unless your knife is strapped down there's a tendency for your sheath to want to "flop" around a bit. There's a firesteel holder mounted to the sheath (firesteel not pictured) and that really leaves alot of room inside the tin.
ESEE-4 but this gives you an idea of what a larger firesteel would look like, leaving even more room inside since: Navigation (compass), Tinder and Fire are already covered.
Here's a good sideview to show how much clearance my sheaths have:
Same rig setup for a baldric sling:
Kydex belt-loop, ESEE-5 Clip Plate, Molle-Loks and ESEE-3/4 Molle Back? Yes!
"Quality, pricing and color options"? And just plain "options" you won't find more, until they're done copying everything I do
Hope this helps you with what you're looking for.
Eli