Well, I put three or four flights in on Thursday evening, and it works great. First off, there is no torque at all during take-off. I no longer have to input any rudder to make the plane track straight as I accelerate.

The most noticeable thing is the downline braking that I get from two props. The plane seems to drop very slowly at a constant rate without any acceleration at all, which I'm hoping will make a lot of maneuvers much easier.

The motor braking effect from the two props was also very noticeable on landing. I think I landed short on every flight because the plane didn't float nearly as far as I'm used to. Also, I was able to come in under power with a very high angle of attack with absolutely zero wing rocking.

Another maneuver that is now much easier is a stall turn. I'm finding that I can let the plane slow down until it just hovers for a couple of seconds, and then I slowly apply rudder and rotate it as if it was held with a pin in the center of the fuselage, all the while the wings stay perfectly in plane.

The noise is different. I haven't decided yet whether on not it's too loud or not, but when I run it on the ground it doesn't seem loud at all. (probably because the props are partially stalled when the airspeed is below 14 mph...)

Right now the rest of the plane needs trimming properly, so that's where I'm going to spend my time. It looks like I'm still going to need all of the standard mixes, so it's going to take some time to get everything dialed in.