Your first hours in TESO, at least, will be PvE focused before the option to transition into competitive play. "Yeah we don't know exactly when that point is," says Firor. "Right now it's on level 10, which is about 15 hours of gameplay."
I'm sure he was making a very conservative estimate and in reality people will probably level quicker than that, but that still seems like a much longer time frame than other MMO's if I can remember right? If we assume that it will undoubtedly take longer to progress through the levels the higher you get, it could make for quite a lengthy levelling period.