In short, no. A number of reasons why,

- A disc looks cooler (imo) and there are many bar spinners but not many large discs kicking around so I like to be a bit different
- A disc is much more stable during a collision with an opponent. If you watch the gyro forces acting on carbide or tombstone, the bot generally gets thrown away at funny angles meaning it takes a bit longer to line up for another hit. As a disc has mass all the way around, it's far more stable during a horizontal collision. If you watch some of PP3Ds hits, we either get knocked horizontally across the arena or launched up into the air but we stay near horizontal
- It's easier to get more of the spinning mass to the outer edge where you want it to store kinetic energy.