For six months of the year I run the P2 bleed after start, whilst completing checks, to warm the screen then close P2 for lift / departure. Incorporated that into my routine after having a "misting" experience on the climb -out one morning. Looking out of a rapidly-opened sliding side window whilst the screen cleared is an experience I would rather avoid repeating.
I now have air-conditioning which is a great help to reduce moisture content in the cab.