I too have used the paddle to disengage the cruise control, as well as done everything else mentioned regarding regen braking. The thing is, when you have a passenger, their comfort should be taken into account too. I might play around with the paddle and driving in L sometimes, but I can see out of the corner of my eye that my wife is swaying all over the place.I feel that I can tap the paddle without engaging it. I don't have to "apply" the paddle to cancel CC. Any regen braking that might occur from an instantaneous light tap on the paddle is significantly less than the regen I get from "coasting" in D (I only drive in L in stop/go traffic). You might want to give it a try. If it doesn't work for you, just do whatever works best for you. Others might find this tip helpful.
The paddle, lacking proportionate control, seems more like a joke. It's ok if people like using it, but it could be better.