The FIST is on my belt, the Comp-Tac is in some drawer, with a couple dozen other holsters
The FIST is much thinner. I wear it OWB but with my belt around it. hugs the body much better. Being 5' 8" and 145 lbs makes it difficult to conceal a G-26 in S. Fl.
Regarding Customer Service I had a good experience; I had a minor motorcycle accident that broke the holster; I had a long trip planned a week later, I called FIST, explained my case and they got me a holster just in time; the lady was very nice ... That was over a year ago.