LOL! I've done that before, (not as drastically of course) but still. Mostly it's just when I'm in a demoing mood, seeing what's out there. The only time I don't do it is during tournaments. I bring a pair or more of relatively matched sticks and I'm good to go. Lately it's been my Bio200s or my PDRGT+'s depending on how I'm feeling. Lazy? Bring the PD, feeling up to par? Bring the 200s!
That being said, the main reason I switch during a tournament match is that my grip gets absolutely soaked. It's no fun at all since I'm a heavy sweater in my palms so I usually trade off at every change of ends.