I'm find it slightly suspect as well - the specification does not really say anything at all.
It looks a bit too big for those who are truely mobile and slightly too small for those who need a device that is mobile but used in a more or less static environment (such as taking reportings or the like in people's homes).
At the current moment besides my wonderful treo 650, the best truely mobile convergence device seems to be this:
http://www.pcadvisor.co.uk/reviews/index.cfm?reviewid=165The MDA Pro (sold under various tradenames) and that's still a bit too pricey for most educational environments.