To quote Roger from lensrentels.com:
10. Your favorite lens Is never in your camera bag because it’s always mounted to your camera
Is always in your camera bag in case you need it for that special shot Is on your desk near the computer where you can look at it while thrashing those who make negative comments about it in the forums
Source: The gear-head/pixel-peeper quiz. (http://www.lensrentals.com/blog/2011/12/the-gear-head-pixel-peeper-quiz
I usually keep my camera and lenses in a glass cabinet to the left of my desk. When I go out to shoot I usually grab just my camera and one lens. If I need more I also have to customize my Lowepro Flipside 300 because I use this as my college bag.
<10min for me then
attached is a nasty pic (the glass removed)