You should have asked for email when not at the office.
I totally agree. When in the office 9+ hours per day, mostly at my computer, I use a Windows based client for work email and browser for personal GMail. I only rely on my BlackBerry when away from a PC. Hopefully a followup survey will be what you suggested and we will get a better feel for how people check while away (and perhaps we will see who is "lucky" enough to not HAVE to check while away, i.e. does not have night/weekend support).