A small Hogue Handall grip would probably work on the PG. As for the Terminator Technique, yeah, I've tried it too. Impresses the hell out of one's non-gun friends, but I wouldn't want to use it in a real jackpot situation. I find it easiest to ride the recoil on max dr and magnum loads.
"The right of no person to keep and bear arms in defense of his home, person and property, or in aid of the civil power when thereto legally summoned, shall be called in question.." Article 11, Section 13, CO state constitution.