I typically wear a full face Arai especially for long runs.Last year I bought a Scorpian 3/4 as sometimes it's just too hot. It comes with a full ,below the chin face shield that can be adjusted up or down,an internal flip down shades and a visor that can be swapped with the face shield. The change is easy but I use the face shield in the up position until it rains or whatever Colorado throws that day.. The ratchets are strong enough that it doesnt come down at speed and the internal shade has enough room I can wear shades under it while it's down so your glasses will probably work well behind the shade.