Tom:
In the FWIW department: I'm using a wiper set from Specialty Power Windows - they make a full line of wipers and power window kits for Street Rods. 2-speed with washer support, ALWAYS works for as long as it takes, and it can be (more-or-less) easily adapted to a 356 (my motor is above the passenger's feet, behind the dash).
http://www.specialtypowerwindows.com/powerwiperkits.htm
Of course, there's no reason that a VW wiper set-up shouldn't work, too.
Alan Merklin and I took a close look at the Silver coupe that John brought to Carlisle, and we were both pretty surprised to see the lack of attention to detail. If you're bringing a car to an event to show off your workmanship and attract customers, then I always expect the best thing that can be produced by that company. The silver coupe had chintzy window seals, lots of adhesive showing both inside and out, things that weren't straight and so forth. We were not impressed. I guess, neither are you...
gn