Thanks for writing down your thoughts on this. I became an Android user first, and only after that I became a dev. As a dev, I ended up in some cases implementing apps with foreign design, and the user in me said 'Hey, this is wrong'. Of course it would be easier to code once, but, in my opinion, the user chose a platform for a reason. Also, I would like to point out that the design guidelines should be respected on every platform.