It will be more interesting to see if there will be consumer demand for HP's real iPad rival, the Palmpad.
I just ran into a fellow passenger on a flight who works for a startup in the Bay Area that makes portal software for corporate boards of directors (to securely share info about the company).
After starting as a normal web-based app, they now have three full-time iPad app developers devoted to their iPad app -- because these board members love their iPads and demanded a version be created for it. They have so much demand from corporate boards that their sales team is struggling just to keep up with inbound orders.
An anecdote does not suffice for data, but if gray-haired corporate board members are so nuts about it, there must be some sort of significant business demand.
A colleague's husband's department (same corp, different company for him) actually has a fleet of ~30 iPads. They're cheapish, easy to dev for if you have an in-house mac shop, and popular with the suits. Not to mention easy to use with the corporate intranet sites thanks to webkit.