I have the Halcyon goggles and they are fine. They work well with helmets and the rubber grips them well. I keep my hair on the short side as any longer and I will be losing more hair to the brush afterwards trying to clear the wind knots out.

Welcome to the dark side. The choice is yours...

What's your mileage? Who cares. Is it practical? See #1. What happens when it rains? You get wet.