Unanswered: Anyone got experience of Lotus Notes on Mac / Mobile

Going to have start using Lotus Notes.

Prob going to given a not-so-desirable lappy and was thinking of buying my own (MBA or MBP), so I have some questions..
Is it easy( and free) to install Lotus Notes client on Mac?
Does anything have to be done by IT at the server end? Or do you just download the client and put in your log-in and server credentials?
Is it as fully functional as using on PC?

Have any peeps used Lotus Notes on their mobile?iPhone 4?
Android? I knowow there's an official beta client out there somewhere

Thanks in advance for any replies