Most of alexis work is based on my opensource optimized maxwell ccminer kernels. I have more than 1000 commits to github. Don't forget this... Anyway, the unreleased nist5 private is doing 55mhash. Ccminer 2.1 45 mhash and alexis 1.0.0 48mhash.
Gtx 1070 same clocks and launch config.
http://rgho.st/8qms9tygbnist5 It gives an acceleration of 53.3 mh