I don’t know how wrong you can go with a simple molle panel. I got an “Amazon special” and it seems well constructed. I find the truck seat molle panel to be very useful, although I don’t know the “Gray Man” brand but they’re certainly on the more expensive side. I do wish that the one I have would be more adjustable for a tighter fit against the seat.
Don’t get too hung up on the “tactical” moniker…. it did come from military applications originally, plus it’s a marketing thing. The Yanks love all things military, and that’s who it is marketed to. I am a big fan of a bunch of “tactical” packs that I use for fishing. I find being able to strap on pouches when needed is super handy! Even the fly fishing-specific Loop brand pack I have has a molle panel, and it’s great.