i guess i shouldnt be so cut and dry about it. it is possible. they are popular with female members. i know frost will be wearing something akin with his tempest kit as well. theyd work, perhaps not the best though, for neo crusaders.
problem is ive seen it tried and failed several times. the flightsuit in star wars iss support to be projectile and stab resistant to a degree, dont even get me into how this works when its loose fitting as by our tech it wouldnt, so it needs some heft to it. most suits used for flightsuits dont have this anymore than ua does but, you can fake it by it being loose fitting. ua fits so tight you lose that. personally, i dont like seeing tk's and clones wearing ua. i know theyre spendy and less comfortable but, there are proper body gloves out there that look a bunch better.
plus, as ori poited out, if you're not big and ripped or covered in heavy armor, you could end up looking really silly.