Since I've hit 50 miles in mine since buying (largely thanks to this thread), thought I've give my thoughts:
* Definitely needed at least a little break in, first run felt pretty bad.
* Noticeably lighter on foot than my other shoes in rotation (Arahi 4, Vongo v3, Guide 13). My M11 weighs 288g/10.1oz vs the Arahi's 309g/10.9oz & Guide's 323g/11.4oz
* The firmer medial side feels a little odd for the first mile or 2, and then I stop noticing.
* No obvious fit issues, upper is pretty comfy.
* Feels very good at medium-ish paces (LR up to MP), less so in the faster & slower ranges.
I've tried a few different workouts in these at LT (6:20ish for me) and found it sadly to be quite a struggle - not sure if that is due to my foot strike or motion etc, but noticeably harder at that range. So perhaps a slight disappointment in that this is not the tempo shoe I was hoping it could be, but definitely has room in my rotation as my go-to LR shoe.