They are not really winter tyres, but will be good in deep show.
Winter tyres have many sipes in all the blocks and tread surface.
I had BFGs but as my off-road choice, summer set and full winter set. The swapping can get tedious so have now dropped the full summers for a set of all season ATs but would still purchase a dedicated winter set like Nokians or Vredestein if I used it as a daily drive.
(edit) Just for clarity, I'm not dissing your choice of tyre as they are my favorite off-road tyre, I just didn't want the uninitiated to think these were a full winter tyre in places where they are really needed.