My company just opened up to the idea of letting personal devices access Exchange, so I signed up. I also don't look forward to the 24/7 email access, but I can't get over how amazing it is to have my calendar with me. We're pretty meeting-driven, so it's not unexpected to bounce from meeting to meeting, and I forget where to go sometimes. Plus, now I don't have to keep personal events on Exchange just to see them overlay. Synergy worked like the bomb, too, joining together the entries I already had in GMail or Facebook with their Exchange counterparts. I imagine disabling this over vacations (or at least stopping notification), but it's pretty great so far. PIN enforcement kind of stinks, but that's
avoidable, too, if the need is really there.