I used the murray's full race harness for the tybee, it was fine. I did use a different spreader bar though.

Trey uses the Ultimate, and I'm pretty sure he likes it. He'll have to comment on it.

As for the barz, they'll fog up if you look up. If you're constantly looking at telltales, they'll fog. They'll fog if you're wearing a big hat that traps heat. You can use the spray that hockey players use on their visors to get rid of the fog. Use rain-ex on the fronts of the lenses. Make sure you have them lanyarded to something on your body during the tyb.