My P2002JF has a hefty, sharp little hammer accessible from the pilot's seat but not so readily reached from the RH seat. Don't know if it's only the VLA certified versions which have it, or whether the Tecnam LSAs also have hammers.
Like the OP, I was (and am) extremely nervous about a number of the canopy designs around. There's no perfect system but I looked for decent roll protection as a starting point, trading a slight amount of visibility to get it. There's a video of a factory crush test of the P2002 cabin and it's impressive for a light structure.