That seems like the direction that would be less vulnerable to copyright/patent claims. I could easily see Apple raising hell over the compatibility layer Apportable ships with their "ports". Android, itself being an open-source project, would be immune to that.
Sure, but Apple, being sometimes a little overeager to keep the apps they accept "of the right sort" -- ideally fully native, really -- could see an compatibility layer and decide to simply refuse to approve any apps using the bundled Android layer.
