I found them very comfortable out of the box but took me about 500km to get used to shifting. Yeah they squeak. I shoot 'em with a bit of chain lube now and then but don't expect to sneak up anybody.
I haven't had them in a down pour yet but walked through the above with little to no water in the boots. Only thing I'd change is the price.
Oh yeah .... 10.5/44 shoes and 44 in the boots (44 in the Sidi Discovery too).