I admit I'd not rode one before I bought this one, riding it home I was thinking to myself "What the he77 have I bought", twitchy didn't begin to describe the steering. I've had it now for a couple of months and I love it. Once you loosen up, all is good.
If one of the two out board don't take it, the middle one will.
You're 100% correct, it is hard to miss road kill with three wheels, ask me how I know

.
Sticks to the road like s**t to a blanket. I'm not an aggressive rider by any stretch but it just begs to go around turns fast lol.
Mileage, I get 40-44 Can MPG, 1330 CC Rotax triple. It'll haul butt if you're so inclined to wind it out, if you twist the throttle after 4k, it'll scare the crap out of you and seems like it'll rev forever.
Semi auto so downshifts on it's own, up shifting is on you or you can manually downshift if you want for braking.
As for leaning there's no countersteering involved like on two wheels, you lean to the inside of the turn same as a Skidoo, or a Seadoo. It's more physical that a two wheeler but in a good way.
With reverse, backing up is no problem.
Linked brakes so there's only the foot pedal for all three wheels.
My previous ride was an '09 1700 Voyager and it bothered me to no end to have to sell it but it was getting to the point that I was too nervous. You lean that puppy more that a few degrees, it's going down and at close to 1,000 lbs it isn't coming back up easy. While moving it was smooth and easy to control, stopped if your foot happened to go into a hollow in the road or step on a rock while backing up and your foot rolls out, you're in trouble.
My previous ride: