Aaron H.wrote a review of Giordana SottoZero Shoe Cover on December 1, 2015
Familiarity: I've put it through the wringer
Fit was good, L fit nicely over 44 Sidi road shoes (I prefer my shoe covers to fit on the snug side). Not super-warm, but warm enough that 2-3hr rides in the mid/low-20s were tolerable with a pair of thin merino socks. These were too warm once temps hit the high 30s.
I used these almost daily through 2 New England winters and was largely happy with them, until one of the zippers started to come apart halfway through the second winter. But since they are only $40, and no shoe cover will last more than a few years under heavy use - I'd consider buying again.
Not awesome, not going to last forever, but good enough given the price.