I got horses on my chars last beta. However, that isn't why I picked up the IE, and personally, I would not spend a penny of real money just for that. The starter horses are not fast enough, and you have to dismount to collect stuff I can't ride by a flower without getting off to pick it up.
Atropos mentioned in his Q+A yesterday that it's really not worth getting the basic horse, and he thinks you should save your money for the next horse up. That's because the stats on the basic horse are capped at a lower level than the good horse. It's true that the Imperial horse is something to ride in the meantime, but the advantages are not that compelling.