In the end, Gary decided against the idea of testing it out, not now and not in this area against a person he didn’t even know. Sure gang members were mostly bad, but he had no right to punish a random person who might have similar circumstances to himself, especially if all he was currently doing was making sure that the neighbourhood was safe.
Alas, it appeared as if the high schooler would only find out once he tested it out. Maybe when he transformed it would give him all these benefits, provided of course he stayed conscious. Right now he would have very much prefered a Partial Transformation skill over the full version.