The rear should index fine. The front can come close, but works better in friction anyway. (I'm using brifters and may be switching the front der to work it out...but it works pretty OK as is now.)
I picked up the same frame and size a couple days ago in the returns area (with the extra 20% off it was a whole $50).

I Built up a 58 touring frame from them last year, and will be trying some new things with this one. If this one feels even better, I'll keep the 56 and sell the 58.