Expose your identity yes, but I feel that if you live in a country that isn't openly hostile to Bitcoin, then banks will not care much if you're P2P selling through ATMs as long as it isn't an abnormally large amount for you that you're handling.
Yes, but in my mind, the reason is that they will know who you are and they can potentially use this knowledge against you somewhen in the future. But definitely, if Bitcoin is legal in your country, then they won't care a lot, until they decide they need to care.