Well I have one and I'm not impressed. After getting over all the fuss I found I can't do that much with it. I love the extension it gives to my BB via bridge but that's it. I started developing my own stuff but it seems the useful APIs aren't accessible as yet so I feel boxed in. Its a lovely tablet but it's no match for whats already out there. The "constant updates" mentioned earlier will hopefully deliver me soon; I see there's some nice stuff planned for it so I'm waiting.
For I now it's Android and on the PB side...Adobe Flash Builder 4.5 and lots of snacks.