My friend and I are starting as Android developers. Neither of us have previous experience on either platforms. He's got SAS experience and SQL, me I do more web design. So far it's going good, specially for him as he's learning fast. We choose Android as it's only $25 bucks to become a registered developer, plus he has a HP Laptop, no Mac (i have a mac) and he currently doesn't have a job. We do intend to try iOS development if we get Android development working.