Swiss Bindings have been explained... and they've also been documented and drawn!
Check out: http://blog.ostebaronen.dk/2013/01/awesome-mvvmcross-swiss-bindings-for.html
And totally deserving of a Badge of Awesomeness!
Besides which, if ever you are after a MonoDroid control, check out https://github.com/Cheesebaron/ - from ActionBars to HorizontalListViews to SignatureCapture controls - he's got it :)
And he also sent me a Pull request with a spinner fix in it this morning :)