I'm perfectly happy having corporate e-mail on a phone I pay for 100%, but I refuse to allow anyone to have control over my phone but me. My company encourages e-mail on our personal phones but require stock firmware, non-rooted, the ability to remote wipe, and the ability to change security settings on my phone. I'm fine if there is a requirement that I have remote wipe ability but I should be the only one in control of it. And telling me that I can't run alternitive firmware due to "security concerns" is ridiculous!
Until I can get just get corporate e-mail on my device the way I want it I'll be happy with it and use it, until then they can pay for the phone if they want to control it.