Feel free to follow our mobileread discussion about webOs being open source
here ;-)
Now, about your question, I would say yes. As a matter of fact, a new round of HP tablets (refurbished) will be online for sale on ebay, Dec 11.
I think is so cheap (and now we have a clear picture of webOs future) that won't hurt buying the tablet.
I've always said that 10" is an almost perfect size for PDFs. And the touchpad is a very cheap and decent alternative to any 10" Android device, or iPad (talking about PDF capabilities, of course)