No experience with that brand, but this month's Fine Woodworking arrived today and there is an article on testing a number of outdoor finishes during a year of actual testing of sample boards (cedar, ipe' mahogany, pine and white oak) in various climates (boards left outdoors in CT, OR, LA, NM to get a wide range of temperature, humidity, freeze thaw cycles etc. conditions.
Watco Exterior, Zar Exterior water based, McCloskey Man o' War Spar, Epifanes and Epifanes over a CPES base. Epifanes was their choice.