I'll repeat what I've said elsewhere, and add tremor being a trim instead of a package on the F-150 is dumb.
So Tremor can't get the good headlights; while Lariat loses the sport appearance package and can't get the winch, while only the Raptor gets the best color? And all 3 are within $3.5k...
So does the 2023 Tremor have the same torsen front dif as the current?
Iirc It's the only real thing that can't easily be modded into a standard super duty as a tremor clone.
Most people that carry, carry some form of a striker-fired 9mm for a reason. If a Glock is too blocky for you (I agree) you've got a wide range of shapes to pick from between S&W M&P, SIG P320, and XDM. For single or staggered stack the M&P Shield or P365 will do nicely. The big thing is go rent...
Don't have a tremor, but had. (and loved) a bedrug in my F-150. Good fit, much gentler on feet/hands. No issues with rot or mildew or water in general. Grippy enough to stop stuff from sliding around, but not too grippy that you couldn't slide when needed. A+ and will have another in my next truck.