I couldn't take the Shed, as it still doesn't have an engine (yet!), so I took my usual F up for building the prototype with Nick at Storm wipers. I have to say that I am delighted with the result (see attached image)
The mechanism is beautifully smooth, and wipes the full arc of the screen. The attached image shows the wiper intentionally parked vertically on the screen for photographic purposes, but actually parks Lotus-Elise-like to the passenger side (this can be altered pretty easily by moving the position of the motor cam on its spindle). Only fitted yesterday afternoon, so no rain on screen yet, but a wash-wipe at 80 didn't result in the usual judder of the standard wipers due to aerodynamic lift...
The cost is 65 quid from their ebay shop - and really is very easy to fit, with just a little air-gun action to the airbox to clear the mechanism at full sweep (if you have one of the later TFs with the smaller airbox, then you've not even got this to consider)
Makes sense for the track car - this will have the wash-wipe built into the wiper. Keeping it on the road car for the time being - it's growing on me, and it is certainly different! 
