Ahh that's ok, means by the time that Biting Torque is completed I'll have ironed out all the kinks in Drumroll Mk.II

Regarding omni-wheels; the only robot I've seen footage of who uses them is 'Sidewinder' from Australia. It had omni-wheels (or transwheels, same thing pretty much) that I believe were from Kornylak (link) and even though the rollers were some sort of rubber material, I noticed that the robot really lacked any form of pushing power. Applying that to a Y-Pout design, I'd imagine that when the robot and its blades come in to contact with another robot, even though they'll weigh roughly the same, yours could well go flying off in the opposite direction more easily than the opponent due to the omni-wheels, resulting in a lot of the stored energy being lost in the impact. It may, of course, work differently in practice