When I started carrying, back in '89, it was a Combat Commander IWB, which concealed nicely. However, the problem of the cover garment got me to trying different options--including a belt pouch that was called a 'colostomy bag'.
I finally settled on carry in the right-front trouser pocket. Currently, my CCW is a J-frame, but I have also carried a Kel-Tec PF9. When I can practice enough to regain proficiency, I may go back to it.