I carry my CZ 75 B in DA mode with the hammer let down to half-cock. I like the smooth short trigger stroke for that first shot, and the short reset and crisp letoff of the rest. I always carry IWB in either a Craft Holsters lt. 92, or in a Front Line Yamam .
Wearing it right now in the Craft holster, under a chambray work shirt tucked in, with the tail bloused out on the right side over the pistol.
I also always carry one spare 16 round magazine in an OWB belt pouch with a snap cover - looks like a Buck knife or Leatherman pouch.