The reason I'm not heartbroken over tossing the OEM wiper is that the Rain-X latitude and Bosch Icon blades both have a full length spoiler / air foil molded into the design. And it actually does some good because the blades themselves are extremely flexible and curve to fit the windshield. And the new blades use engineered silicone polymers in place of rubber so they tend to be quieter and last longer. And finally, I hate the mechanical spider that older designs use. It's a trap for leaves in the fall and a place for ice to cling in the winter. The floppy blades don't have these problems. I'm not at all troubled to spend $40 for a set of wipers once a year for each of our cars to have a clear view of the road.

The one caveat is that the floppy blades have to actually fit. If I can't find a set that work with the XFire J-arms, I will do exactly as you suggest.