I am one of those guys that rides in everything unless it’s frozen. First tip… Rain-x or my favorite Aqua Pel. Then get an anti fog chemical, either from a bike store like cycle gear or from a place that sells diving equipment. Lastly no I don’t wipe my visor when I have my full face on. Turning your head from side to side (with the rain-x applied) will allow the wind to just push it off the visor without the smearing effect. Make sure though your eyes are still on the road, otherwise, unless you have previously forced yourself not to follow your eyes (which I spent a considerable time aiming to do so I could look at the scenery I was passing without worry of lane changing) you will risk going where you don’t want to be.
If not of that helps you and you get caught, and still uncomfortable..nothing wrong with stopping under a bridge or nearest corner store. These days especially with all the bells and whistles “phones” come with.
Oh and yea… braking is definitely more sensitive.