SamuraiSpork:
I've got a fair amount of experience with SWN, playing and GMing. The problem I can see with playing over rpol is it's a very crunch heavy game. Revised is streamlined alot though.
I've played the original rules over RPoL a fair number of times; it handles pretty well and isn't crunch heavy at all (especially not compared to games like Shadowrun or Warhammer). Although, I suppose YMMV.