I like my chain watcher on the tandem... Allows me to set my granny shift limit slightly more aggressive without worrying about it throwing the chain, so that it always shifts into it fast.
Nothing sucks worse then timing your shift perfectly, only to get stuck in the 42 ring when you hit that 15% grade
Then trying to give the drive train a little shifter english under high load at 50 rpm pedal cadence to get it to kick over..
So yeah, nice shifts with the chain watcher
