I would class that as a shuffle machine as it places the main body on the ground to make a step. A walkers legs, by the FRA rules, must have 2 axis or more of motion, that only has 1. Same with clawed hopper. the way they got round it was my not having 2 independant walking mechanisms on each side relying on the turntable to steer the robot.

http://robotwars.wikia.com/wiki/Drillzilla

This american bot runs on the same shuffle system as Clawed Hopper but as it uses 6 shuffling feet on each side so its more like a tracked vehicle than a walker. And again it only has one axis of motion = shufflebot. The same goes for the original Son Of Whyachi with its shuffling pads.