Galvantula can be used in OU because of Sticky Web but only because he's got some ok attacking stats for cleanup, too. I've run a scarfed set with HP Ice before and it's useful for outspeeding/OHKOing Greninja, Gyarados with a DD up, Scarf Chomp, Gliscor, Starmie, Hydreigon (just a 2HKO I think)...