Being French, I know Cristo quite well, and I think Habs fans will be positively surprised when he'll hit the ice. His nickname in Manchester was 'the wall' and he could have been the permanent #1 in LA if Cechmanek didn't get so hot at that time. He's a lot to prove as a #1 but will be a great fit in the backup spot, and he might learn even more behind Theo.
My only concern is regarding his injury. I hope he'll have all the time to heal and get back on top of his game, but that won't be before the end of the year.