Got these to replace Sidi Adv 2. The added protection can be seen and felt upon taking them out of the box and even more so when putting them on. The memory foam that firmly encases the ankle combined with the solid outer boot and hinge should keep the ankle as safe as possible. The stiff sole and firm but low-profile toe box will keep the foot from getting smashed. Despite having the feel of a ski boot, the SG-12 is absolutely walkable.
Should have bought them to begin with instead of seeking a compromise in the Sidi Adv 2.
I’m a 10 1/2 US in running shoes and 11 fit perfectly in both the SG-12 and Adv 2.
Thanks Brian, for taking the time to explain the differences and shipping these out very quickly. Looking forward to years or riding in them!!