Originally Posted by
Andy_K
I used to love my interrupters, but I eventually stopped using them and now have a couple of pairs sitting unused on my shelf. One downside is that if they aren't installed just right they can add friction to your system and reduce braking power. This effect is minimal if they are installed correctly, so it's more of a convenience issue than one of functionality, but it was enough for me to stop using them once I was on the fence.
My bike came with them and I removed them because I just couldn't get them to pull nicely without grinding feeling. Plus the distance between the levers and the Parabox was kind of a limiting factor. Depending on commuting situation the top bar levers can be great or they can be a don't care.