The Townie 7 models use the Shimano RevoShift twist grip shifters -- super easy. My 2008-2009 Globe comfort hybrid uses the same shifter. Works very well, no guesswork once the derailer is adjusted to match the RevoShift clicks -- which the LBS will do for you. Just twist 'til it reaches the next click, done. No need to feather, fudge or guess. As long as the derailer is adjusted right, it just works.
The 3-chain ring front derailers can occasionally be a bit more fidgety, needing just a little feathering to shift the front derailer smoothly. But you can just leave it in one chain ring and that's often good enough for most roads and modest hills.