I use a
http://www.rmholsters.com/
For my Glock23
And a
http://www.comp-tac.com/
for my three Kimbers.
I have two Milt Sparks Versa Max IIs for Kimbers also a SideArmor 4th Gen.for Glock and they are really quality holsters but I really like the quickness of my RM and Comp-Tac holsters. The SideArmor 4th Gen. just does not lay right in my jeans just not a good fit for my carry needs.