So yeah, this issue isn't out yet and Marvel are already promoting a big Peter/MJ story by Slott
Honestly, same. In a crazy world like the Marvel Universe, it would only make sense for Mary Jane to carry something for her defense. While I'm more partial to adapted web-shooters and repulsor gauntlets for MJ, I am not so opposed to a good old Glock if that's what it takes.
He launched Renew Your Vows. He has it in him to do a good Peter/Mary Jane if he's inclined in that direction.
The spider is always on the hunt.