Yep, +1 for pinlock. EVERY Shoei in the UK comes with pinlock as standard. They're amazing for rain fog and cold weather breath.
Heaps better than fog-ex or zip ties round the chin piece.
As Wolfie says, you can get tinted ones but you can swap them around visors too. I have a clear one that normally stays on my rain helmet and goes on the dry one, if it's cold.