Both me and a friend had issues with fogging of the lenses. Throughout the year as well, no just when the whether was particular humid or cold. The reason for this? I'm not sure, but it's put me off the Profits for the foreseeable future. Which is a shame really because they look so bad ass.
On some days they seemed to condensate, not fog.... It was weird. Can be sorted by simply adding more venting up the top on the lens I believe. Anyway, my mate has some Sly Profits Mica (with like 4 lenses) he is getting rid of if you fancy them?