I've used electrical tape on the last two helmets, an old HJC and a Shoei modular. Doesn't block your view, just gives that little bit of protection with the nod of your head. I'm in a Schuberth E1 now, like the drop down lens, works with corrective eye pieces fine, like the adjustable 'roost beak' a lot. All the way down it does block a good quarter of your view, but provides a ton of shade. Easily adjusted, needs to be up one notch in the twistys. Does have a small vibration in turbulence, I just spend as little time as I can in a cage's wash. ::26::