purists will tell you highcaps are not ok... For milsim, I would agree... but then if it's all you got, it's all you got, what can you do?
In skirmish, it's not as frowned upon... skrim is much more casual. The all balancing factor of having 4 rattle cans stuck in your gear makes you a pretty easy target, so I would call it pretty even when opposing players can just work around you.
Even though I find players talking to each other about watercooler stuff far more useful in terms of locating where they are. :P