I'm stuck in MA too, for the time being.
If you're in NW MA then Four Seasons would be a hike and a half for you, but I still recommend it. Not so much for ammo (dicks sporting and wally have better prices (at least on my ammo)).
I'd just not take it out of the holster. If you're concealed, then nobody should be the wiser, be it in a gun shop or at work or at the mall.
Hell, you're luck to be able to carry. I live in Quincy and the Chief here really doesn't hand out ALP Class-A. I'm restricted to sporting and target.
S&W 908 9mm
Marlin 81TS .22
Mauser 8mm / sporterized