I took a test ride on the RT a couple of weeks ago. The 40 min ride had some sweepers and some tighter turns.
What I found was that the unit I was on seemed sketchy, particularly in the sweepers. It could have been me, but I felt like I had to correct all the way through the curve. I have since learned that tire pressure is very important in the front tires. They only run about 17psi in those things and too much or too little can throw the handling off. Apparently, you can also stiffen the front shocks to and that will help.
Power was ok, but I didn't really get a chance to open it. It ain't no K1200GT, I'll tell ya that.
The RT I rode was the top of the line, so it had electronic suspension, stereo, electric parking brake (yes, a parking brake), fog lights, cruise, heated grips.
All Spyders have ABS, traction control, and stability control. Basically, it's virtually impossible to spin this thing out. Take a corner too hard and the stability control kicks in to keep all 3 tires on the road.
There is NO front hand brake. All brakes are linked via the foot pedal under your right foot.
They offer an auto tranny that works pretty cool. A friend rode the RS (sportier version) with the auto. Basically, just like on the FJR AE, you thumb a button on the left bar to shift up, BUT as you slow down it will automatically downshift for you. You do have the option of pulling on the shifter button to downshift as well.
And storage! OMG, that RT had tons of storage. Front trunk, rear trunk, 2 side bags, PLUS a smaller compartment on the "tank".
My friend was so impressed with the RS he rode, he traded his B-King in on a blacked out RS the next week. So far he loves it. He had the chance to ride in some rain and he said he felt the traction control kick in a few times and never felt out of control.
The thing that really sucks about them in my opinion is the gas mileage. We talked to several owners there for the RT test ride and all of them said the best they've seen is 35mpg. I asked the factory rep about the RT mileage. They claim 30mpg. Put a pencil to it: 30mpg on a 6gal tank. You ain't gonna do any Iron Butts on that thing.
To be fair, though, the reps told us that all these demo units are pre-production, so some things could change.