Re: Holster recommendation for CQB
A 6004 is designed to thread onto your belt, and clear tactical armor or gear.
Drop legs are a PITA to run with, and slower to draw from than a higher holster (all else equal). They're a solution to the problem of bulky kit getting in the way of draw from belt holsters. There have been numerous new products brought to market to help raise the holster up, reduce the sagging problem, and lock it in place better.
http://safariland.com/DutyGear/product.aspx?pid=6004-10 -single strap to wear higher on the leg.
http://safariland.com/DutyGear/product.aspx?pid=6004-DFA- prevents sagging, rides higher, shifts less on the belt.
Re-holstering is more of a pain, as the holster moves and shifts more than if it's locked down tight on your belt, and it's an absolute chore to thread onto a belt, then fasten around your leg. You going to run out to the store with a 6004 on, seriously? If you thought you bumped into stuff before with a gun on, just try running around with a drop-leg.
Why would someone who doesn't wear armor, and isn't in .mil/LE want one?
Yes the SLS can be fast...but there are lots of cheaper, faster, more convenient and more concealable holsters on the market.
What's the point in recommending stuff without knowing the context for the user?
I'm probably just "nit picking" again though, right?