The Flight Jacket is expensive but I like it! Been using it for over a year.
http://www.mac-case.com/Leather Site/MacCasePLJackets.html
I bought this case too and love it! I tried using the incase sleeve with this but found it doesn't fit. I have been finding that the case is well padded and soft enough inside so I don't really need extra protection. Are you doing the same or are you still using a sleeve with particular case? I just like the ease of pulling it out of this slick looking leather case.