If its anything like the Ultima the curvature of the screen means getting full contact for a wiper across the sweep is somewhat difficult. That said there's enough rake on the windshield that a coating of RainX is all thats really needed, unless you live in a really wet climate.
I don't run wipers on my Pantera and have been caught in light drizzle to a thunderstorm, the rain just beads up and flows up over the screen above 30 mph.