I would agree with that, but as much as I like the option to change lenses, I much prefer to not have to separate lens from camera if at all possible. Overly cautious I guess, but it's one of the main reasons I want a second body; to have a wide-to-short tele zoom on the 500D, and a 70-x00 zoom on a 7D, and have them always fitted. It's a habit I've picked up since getting the 18-270 last year - it's never been off the camera since, until I got a little 50mm mk1 last month. Yep, I'm lazy.
