To all, including Wrothgar
I buy "Hawiian-style shirts at Wal-Mart in spring / summer. These shirts are NOT BRIGHT AND FLOWERED. They have prints that are hardly noticeable. I get them a little bigger than I normally wear. I do the same with lightweight linen sportcoats for hot weather. I can wear some of these sportcoats with bluejeans (casual), or with a tie. Make sure you buy darker colors or plaids, so colour doesn't show through light colours (ie:whites).
I'm a SHORT and Slim guy, and I carry a Kahr P-45 or a Glock 27, or a Springfield XD-45, etc without too much trouble.
Try a CrossBreed Supertuck, with the forward cant as far forward as possible, mounted somewhere between 3:00 and 3:30 on the hip. The grip will be up toward your armpit so that it won't stick out behind you. The flat of the leather protects your butt cheeks from abrasions. The holster is tuckable for times when untucked shirt is unacceptable, and the grip STILL doesn't stick out behind you. Crossbreed now offers a very sturdy metal belt clip. Also, Crossbreed puts the holes for mounting the clips on the leather instead of on the clips. This protects you from abrasions caused buy other makers clips that ride lower that the leather part of the holster.
Hope this helps a little.