Coppr, have you tried incorporating the hat/keypad views with VR yet? It makes looking behind you/above/fighting/etc SO much easier, and HTC is the first to really blend the two methods, as in DCS it's all head still, as in other sims.
I set up a small fan at about a 45 degree angle pointing towards my head with the Rift on today flying around offline - huge difference in keeping fog off my lenses, I can even wear glasses instead of contacts now, and they'll stay clear as well. I just have it on low speed, but it works great, 10$ amazon cheapo fan clamped to my bookshelf.