Hello, Ive just recieved my MC-11 and a Sigma 150-600 Contemporary in Canon Mount, and Im doing some testing today to see if this combo is any good. So far Rishi at DPreview seems to be spot on regarding AF-C, but Im not sure if its PDAF or some kind of magic trick yet. I have done a short video of AF-C and one of AF-S.
Links to youtube on Flickr: https://www.flickr.com/photos/caegear/26492260581/in/dateposted-public/
Af-S, AF-C is working. AF-S seems as fast as my a6000/Sel55210 combo. setting lens to "Manual Override" (one of three options on AF/MF/MO on lens) makes Focus magnification kick in whenever you touch focusing wheel while focusing! Fantastic imho.
Ill get back with more info later. I have to run out in the woods now to test the combo out.