I just set my work email up last night on my Optimus. The only thing I don't like about it is the stupid lock code.
If your in the mood to root, custom recovery, and flash a rom, ThundeROM has EAS security bypass so you skip the passcode. When I was on HTC and we only had android 2.1 the application lockpicker came in handy but it only works on sense and only 2.1.
I think there may be an app that does EAS by pass on 2.2 but if I recall it's kind of flaky and doesn't always work, requires root, and costs $1. Don't remember the name of the app but I can ask a friend if your interested.
FYI - stuff like this could cost you your job if caught by your IT security team.