jquerymobile and codeigniter, or jqtouch, senchar?

[eluser]searain[/eluser]
I am thinking about using jquerymobile to create mobile web site.

But this jquerymobile is pure javascript for simple mobile web site. Of course, jquerymobile could be used for big database backed web site, like codeigniter site. But there is no good instruction or samples for using jquery and codeigniter.

My questions:

1) any good samples, advices about using codeigniter and jquerymobile?
2) any other jquery or javascript library other than jquerymobile you would suggest to use?
3) how about jqtouch, sencha? any advices?

[eluser]bonatoc[/eluser]
Interested too in experiences from others CI users.

From what I understand all these mobile JS frameworks are young products, and therefore subjects to problems.