If the pocket is big enough, but not too big, and the pants lose enough, but not too loose, pocket carry of an SP101 works for me.
Diamond Gusset Jeans, relaxed fit.
Wrangler Riatas, though mine are an older version. They may have changed. I can pocket-carry TWO SP101s in my Riatas.
Patagonia Lightweight Stand-up Shorts. (Not very "light" in weight; actually quite sturdy.)
My pocket rigs include Kramer horsehide, Desantis Nemesis, Uncle Mike's, and Galco leather. Some rigs work better with some pants than others, but I favor the Kramers whenever feasible.
I use pocket carry mostly for a secondary gun, NOT my primary, due to access issues if bent at the hip or waist. An OWB or IWB on the belt is much more accessible in a wider variety of circumstances.