I liked the one I drove, but there were definitely some quirks.
I noticed a little "click ... click " when it was shifting gears. Nothing different than regular fork noise. Moving along slow in the grass parking lot where they had it parked, I confused the transmission. It was like dropping the clutch, then releasing it and letting it cost 20 feet, then dropping the clutch again.
First gear in it is ULTRA low so it can take off on hills, It shifts fast and a lot.
Going down the freeway, I had it bouncing off the rev limiter. I wasn't driving hard or fast, but every time it caught a gust of wind, it'd drop 2 or 3 gears and run at 6000RPM. That was a bit odd.
The low gearing and mechanical connection made it GREAT for heavy stoplight situations. For a 1.8L engine, it has much more pep than my 2.0. But it has a really low 1st gear.