think so, few times I've used it I've been able to use both skills and regular shots even though the skill description just says "you can't make regular attacks while inside".
tested just now and was able to use spree and a normal shot while inside it.
edit: guessing the "you can't make regular attacks while inside" note is for melee. unequipped my gun and tried smacking a monster in melee range with no luck.
Can't think of many times a gunner would want to melee a monster outside of common gun absorbs on a map like red salamanders are in tap (where it'd be tedious to shield break each and every one you come across), but that's what it is I guess.
Last edited by ShinMegami; 01-12-2013 at 08:38 AM.