I think some people here have gears specifically for travelling and some for serious work when they're home. For travelling, a nice and light telephoto lens is pretty much necessary. Given the weight of the 70-200mm f/2.8 L IS II, the 70-200mm f/4 L IS makes a nice alternative. It does seem a bit overblown to have two very similar lens for different purposes. I'm just wondering how many of you have such a setup and if not, would any of you consider it?