I was wondering if I should ask how do you guys deal with this: I sometimes have my camera + 100-400mm (~3 lbs, maybe?) or 70-200mm lens when I was walking in the zoo or when go hiking. Instead of keep taking it in & out from my backpack, I would like to find a solution where I can just grab it on the fly. At the same time I have other lenses & flash & accessoriesd I wish to carry with me. Which bag would you recommend? I have lowepro backpack & I can get my camera in & out from this bag pretty quick if I have both hands free & not too much distracting but now I have a 25lbs parasite who can run very fast so I have to be able to quickly throw my camera into its place & free up my both hands to prevent him from getting in trouble. With no bag solution, would you carry them by holding to the lens fearing the lens mount might break or you just hang on on your neck? My problem occurs mostly when I want my telephoto lens to be on my camera for a long time. There are so many bags out there (ain't cheap) but I just cannot find the best solution. Thanks guys, you guys are always resourceful & helpful.