Update: more screenshots
Here's a screenshot of my customized kwc.org gmail, slightly altered to block out some visible names (yes, that is my e-mail address if you wish to contact me). There's not much to review here that hasn't been said before: it's GMail. It feels a little cooler because it's my GMail (notice my little custom graphic at the top), but otherwise it's plain-old GMail: 2GB, chat, etc... My account has been 'verified' so I'm now sending and receiving e-mail with no problems other than the slight GMail slowdowns that I've noticed on both of my accounts today (@kwc.org and @gmail.com).
I'm still waiting for the day when we can get rid of our corporate IMAP mail servers and replace them with GMail boxes or something similar. I'm tired of slow search and trying to keep things filed in folders.