Maybe for the Marines and it seems they would be more interested in a stealth model as well, but I was in the Military and I still like pretty with lots of bling! It's gotta work and be reliable, but that doesn't mean it has to be ugly!
Stateside you can have your bling as colorful and flashy as you like because we are free and live in America.
But when you are "in country", the PV of choice is flat black or camo coded to your environment, led disabled (don't want charley to see that light). Something rugged that can take a beating (drop in the mud fling it, wipe it, puff it). 3 piece cause it's gonna get broken down and cleaned at the end of the day right after my rifle any way so cartomizers are reserved for R&R. Lots of throat hit but zero vapor (don't want charley to see the smoke either).
e-liquid flavor of choice = napalm for day vape and something sweet for desert (Cant' bring my wife so honey will have to do). Semper Fi.