I bet you'll keep those bragging rights for a while, I'm not about to break that speed
I've ordered the same brake system as yours. For those who want it too: some of the kids bikes in Decathlon have that brake and they were willing to sell me the brake only ^^
I've tested (can you imagine?) the baby bike and I was amazed how well it braked, and yes in 1 direction only!!
While being there, I also bought the brake cable and mantle.
It's probably a good idea to have a brake system for when all else fails... However, since you don't have ESC braking, will you enjoy it if you have to re-position your foot every time?
Probably it's possible to keep the servo but split the brake cable to have a parallel mechanical foot brake!
I'm a servo noob! Can someone confirm if this servo will work fine for this application? (The exact same is out of stock atm):
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=42948