Smith Elite Aegis Arc Compact Eyeshield Sunglasses Field Kit

Do these come with both clear and dark lenses?

Are the dark lenses 100% uv protective/could they be used as sunglasses and protect eyes from uv rays?

How do these fit when using them with Howard Leight Sport Electronic Earmuffs?

I have a howard leight electronic earmuff. how comfortable are these under the muffs? are they a thin frame over the ear like the ess crossbow?thanks