Andrews leather makes some nice carry rigs.
I'm fond of this guys open top belt holsters:
http://www.gun-holsters.com/ He's in Alabama.
I've got 8 of these for different guns:
It's 110 out here today, carrying one of Johns pancakes is no problem at all under a loose fitting t shirt with either my Sig220 "Carry", the Glock 17 or 19, the CZ 75D, or the XD 45.