In short, if you are not comfortable carrying appendix, then dont. However, if its a matter of comfort, its ALL about the holster. I ONLY use Haley Strategic/Gcode holsters. they are the only ones that fit right, and have the proper adjustable clips.
At work i AIWB a G17 with x300 surefire, and i love it, at home Ill carry either a G19 or a g43 AIWB. The G19 has always been run with the gcode holster. the 43 is new to me and i tried a different brand that is slimmer and cheaper- and it needed modifying to get it to be as slim and not print MORE than the G19.
Again, there is no better position to carry than appendix, but if you're not comfortable, dont do it. If you dont want to give up on it just yet, try the Haley/Gcode holsters, i think you'll stick with it