Here is a link to several videos of Sencha running in PhoneGap (and MacGap).

http://www.youtube.com/playlist?list=PL701583B1101A99C6

Im always happy to answer questions. (although I don't claim to be an expert) I have been deploying Sencha Apps wrapped in PhoneGap for several years and am willing to share any insight that I may have with the community.

Also I have posted examples on GitHub: https://github.com/RandyMcMillan

Have at it! (:

@RandyMcMillan
RandyMcMillan.Net