Yeah, I don't see any point in going DEX, since that's naturally extremely high. I think I've seen my archer miss twice in teh entire game against yellow mobs xDD (against red stuff, no. I've seen my archer miss hundreds of times).
But with SPR, you get the added bonus of crits. And that's going to make up for a lot of damage D= And besides, I think in PvP we're supposed to do very well against mages, so the extra m. def could be useful.
Yeah, we don't get a lot of END. I guess that the defense would be pretty great.