You said Dapper works on MonoTouch—did you make any changes to it? I've read[1] there are quite a few problems with it so I had to choose Sqlite over it. I also found this[2], not sure if it helps. What's your experience with Dapper/MT?

[1]: http://stackoverflow.com/questions/8223837/using-dapper-in-m...

[2]: https://gist.github.com/1115206