So I pulled the pin and purchased one, I got the 'Complete Kit' which is 12' of track and a high hat called the 'Low Boy'.
Very impressed so far. Sets up very quickly, literally in minutes and is smooth as silk. The track has large threaded 'plugs' which make a seamless join so you can throw down just two sections or all four sections (per side). It comes with robust looking padding which you use on hard surfaces. On carpet you can just put down the poles. The endstops are also great, stops you from running off the tracks.
The Low Boy is a great idea. It mounts across the T-piece so the tripod head is about 4-5" above the track. Makes a scenic dolly move a lot more dramatic with the camera only about 12" off the deck. I tried it in a cobbled city square in Denmark, the producer loved it.
Emailed back and forth with the guys that are the US distributors/web retailers. Great info and very friendly. Both these guys are Australians who are US Network cameramen....I guess that's why the knew about the Wally Dolly.