I've been playing EvE a long time ago... I don't think it's the same "kind of game"', so I'm not sure it will pull people from EvE to DU.
In EvE (except in combat maybe), it's pretty much a "relaxed" game, you can even play two game at the same time.
DU will require full attention as it's First Person and you need to control everything (not just target and press)