1. Good Protection
I've had these boots for a couple of years now and have put roughly 25k miles on them, including a 70mph on-track lowside. The boots are comfy and broke in fairly quickly. They flow a good amount of air and are pretty stout in its protection and build. During my lowside, the left boot took some solid abuse but kept my feet, ankle and shin intact. So much that I bounced up immediately once I stopped sliding and ran over to the freshly totaled 1199R that was screaming obscenities at me (in Italian, of course) as she lay on the side of the track. That was a bad day.
In a separate incident, I lost the back end in a turn and my left foot literally cantilevered the back of the bike into the air as it got caught between the ground and the heel guard during an aggressive spat with a patch of apex guarding dirt. I could feel the entire weight of the bike shoot through my boot, but I was able to save the impending high side and my foot was totally fine save for a sore big toe.
That's the good.
The only bad is that some of the stitching has come undone and the boot is starting to fall apart. I'm sure the crash didn't help at all, but the places where the stitching is pulling apart wasn't touched by the crash. At least I don't think it was. Also, the velcro/suede panel flap thing that covers the zipper keeps peeling away from its backing. This started fairly early on. I constantly have to glue it together to keep it intact. It doesn't affect the protection at all, but sometimes snags on the bike if not glued down.
All in all, I give them 5 stars for protection as I'm still walking and my feet are fine despite my best efforts to damage them. I give them 3 stars for lazy stitching and for cheap glue. For reference, my Dainese TR Torque boots are in far better shape though they're slightly older and have an additional 15k miles on them.
This averages out to a 4 star rating. Would I buy them again? Yes.
