I assume the xp somehow scales to the level of the perk and/or the level of the the weapon perked.
Accidently surged up a dinosaurs ass, became stuck then activated double surge and burst out its chest alien-style!
Got his dragon mattocks then crashed the clan citadel into Anachronia wiping out the dinosaurs.
Yeah true, but if it's xp gained you could do the same, and if it's time spent in combat people will just go and attack something they can't deal damage on (can't think of anything atm)
Unslain Bosses - Clan
If its time spent just attack a turoth/kurask. Infinite camping.
Accidently surged up a dinosaurs ass, became stuck then activated double surge and burst out its chest alien-style!
Got his dragon mattocks then crashed the clan citadel into Anachronia wiping out the dinosaurs.