>>2470In my opinion, (and I know this is heavily subjective), I'd say go for it only AFTER you have tried one out at a local retailer.
I come from a background of paper/pencil art, so obstructing my view isn't really an issue form me since I'm both used to it, and I often use my hand to obstruct parts of the paper in order to view parts as individual parts.
but I can also understand the advantages of not having your hand in the way, since most of my digital work untill a few months back was done on a Wacom Intuos.
Though, in the end it just comes back to what you think works more naturally for you. Either way, it'll only be a doorway to your own skills. It won't suddenly turn you into some grandmaster of the arts.