I have no problem with my competition using a brake-pedal button activated 2-step... *because* they are inherently inconsistent!
In any case, it's still just one more thing you've added to the system that can screw up. I've witnessed several important races lost due to 2-step issues. I'll keep foot'n it, thanks. If you "have" to use a 2-step, the only way to do it is with a brake pressure switch. I think Folk sells them.
- Footbraker