Also remember that being a supported platform requires buildbots.  If I'm reading this right that means two: one for the simulator build, and one that actually runs on the device (once the run-the-test issues is solved).  I'm not sure what would need to be done to buildbot to support the scenario of building on one platform and running the tests on another after copying the binary, but I'm sure there must be some way to do it...buildbot is written in Python after all :)  And I'm sure that capability will be useful for more than just iOS...with Android we can probably run buildbot on the device eventually, but being able to test a cross compile build there as well will be helpful (once there is one).