I have been using heated gear for about 20 years and it's extended my riding season up here in NY. Now I have a FirstGear heated jacket liner, and FirstGear heated gloves. I might at some point get some heated socks, because my toes still get cold even with wool socks. I used to ride down to about 35 degrees F. Lately my cutoff is 40.
I have had some Hondas, including a Gold Wing (I'd sweat while riding in 30 degree weather will all that fairing and windscreen). I've had BMWs. I always made sure what I was riding had an adequate alternator or stator output. The Wing and BMWs were good for that. The KTM Duke I had only put out 224W. I had to put a battery gauge on it because the extra lights and heated stuff would soak up a lot of power and I wanted to make sure I wasn't sapping the battery. I was glad to see the HyperStrada's uprated alternator and two power connections.
I had heated grips thrown into the HS deal too. I'd always known about them but never had a bike with them and didn't think I needed them because I had heated gloves. But once I'd gotten a bike that already had them, I didn't know how I'd lived without them. I don't use my heated gloves as much now, because I can wear a less bulky glove with the grip heaters on. If you're covering the brake lever, your fingertips can get cold since they work best with fingers wrapped around the grips. It's good to have both heated gloves and grips, and using each depends on outside temps.
So yeah, I use heated gear. I've got a friend who has never understood my need for it. One day I gave him an old electric vest of mine, you know, just to try. He liked it. So in a moment of weakness with some money burning a hole in his pocket, he went for a jacket liner and gloves and thanked me for pushing him to do it. He has been enjoying them ever since.