I messed around with a V20 sometime back. While different from the T50, I suspect that similarities with the movable bottom bracket design make them "reasonably" comparable for purposes of the question at hand.
I don't think traction will be an issue climbing unless surfaces are slick and the grade is particularly steep. I wouldn't recommend using these bikes for any type of towing, and I don't think they'd be any fun for slow greenway riding.
The handling on movable bottom bracket bikes is very different from anything you've ridden before and is an acquired taste. Pedal steer is extreme -- orders of magnitude stronger than anything else I've ridden -- and requires special technique as well as smoothness.