The Blackhawk Serpa holsters became our most popular level II holster due to its easy use and reliability.   There are plenty of reasons to not use thumb breaks and locking mechanisms on holsters, but for those carrying openly or using a sidearm as a secondary weapon, having a easy to release locking holster is comforting.  For hard use and physical work, holster, gear and magazines can come loose.   The Blackhawk magazine holders for double stack and single stack magazines is probable the best made magazine for concealed carry because there are no flaps or covers over them, but they still retain the gun magazine with tension.   The design of the Blackhawk holsters works right with your basic firearm safety procedures and will easily be released by the trigger finger while it is in the safe position away from the trigger when be retrieved.  The Blackhawk tactical leg holsters are also big sellers for those carrying full size autos like the Beretta 92 or Glock 17.

Angles make a big difference in the easy in which you can deploy your firearm.  If you look at some of the Desantis leather holsters there are numerous belt holsters that have different angles, the Blackhawk Serpa holsters that are drop leg holsters are at a lower angle and in my personal opinion less likely to have an operator slide their finger off the holster release button that on the waist.  There are always body types and situations where this can cause an issue but for me I like the drop leg holsters more than the belt.  There are some attachment devices that you can use to make your Serpa holster a molle compatible device and we are stocking more and more of these adaptives.