Bikepedia doesn't list a 2004 Lobular, there is a 2005 Lobular, however there isn't a D/A model, you don't get that 'till 2006. They are full on road bikes.
Also, I don't see a current Lobular listed on Orbea.com :\ (Edit: when I google Lobular Cross I can get to one on orbeas site...hmm)
Anyway, if it is a full DA bike and in good condition, I'd say go for it.