So, been using the vehicle for a week now.
I've not made it to work and back (26.7 miles each way, the car keeps track of it) yet without the scooter motor firing up, but it looks like it should be possible once the weather arms up and I've got the wall charger hooked up. Without the wall charger, I'm leaving for work no more than about 80% charged unless it's Monday. I've had no problems finishing the trip on the range extender, even climbing the hills I need to at 70+ miles an hour.
Wall charger is mounted and ready for the electrician to hook up. I could do it myself, but I'd really prefer to have a pro responsible for burning my house down on a bad job of a 40 amp load that's going to be running 4-5 hours a night.
Two changes in driving style out of using the car so far-- first is doing the single pedal driving with regen braking using only the accelerator pedal. It takes a while to learn how to use that and still stop exactly where you want. I don't really find it aggravating in any way, it's just kind of a game to play.
The second is that when the road speed limit is 65 mph or higher, I'll pretty much stick to the speed limit. Traveling at 75 mph or more is possible, but it burns through the battery in a pretty big hurry.
Other likes so far include being able to "precondition" the car so it's already warm when I get in the car to go to work. I'm also a lot bigger fan of the active cruise control than I thought I'd be.
Biggest negative so far was discovered during this latest of the weekend winters we've been having here-- it wasn't great in the snow. Not dangerously so, but not great. Found out that the only tires available for the 20" wheels on the car are a single offering, and they are "Grand Touring Summer" tire. Have to get a set of 19" wheels to put snows on the car. And they use a new flavor of TPMS sensor, so those are more expensive if I install a set of those as well...
I've looked at what my electricity billing is, and it works out to about $2 to recharge the battery ($0.09/kwh), as opposed to a minimum of about 2 gallons of premium gas in what I have driving. It's a pretty fair savings, but it will take a while at that rate to pay for the wall charger.