Since you tuck w/no jacket - assumption since wearing dockers or jeans, better look at (a) the tuckable IWBs or (b) the CIPS holsters (conceal in plain sight), or (c) belly bands.
Tuckables: In the beginning there was the Mitch Rosen Workman. Then came the Galco Deep Cover. Then the Blade-Tech UCH. Now I think there are one or two others, too.
CIPS: Fanny pack, Phone-E-Pack, Bayer Arms phone/pager holster, I want to say DeSantis or someone has one looking like a camera bag. (variant here is pager pal, but Walther too big for this one).