No specific personal experience with those wheels other than to say

(1) I have a friend who rode those HED's with the wider rim and LOVED them.

(2) Also, my new road bike has 23 rims built to work with the disc brakes. (Since it's the only production road bike running discs, they had to also build a wheel/hub to work with it and since the bike is designed for long distances, the wider rim/tire was a natural fit). I'm running 25 tires on them right now. They handle great. A lot of that has to do with the frame geometry, stability and modulation of the disc brakes, but I am sure a lot of it is also related to the contact patch as well.

Any way you could demo those wheels on your current bike to get a real comparison for how they handle?