I've fitted them! They're good! Ish...
The fitting's fairly worrying. Basically after studying the blades and the wiper arms for about 15 minutes I realised you can just push them into the loop at the end of the arm, where they're held in by a kind of clip action. You can remove them easily enough by pushing them towards the base of the arm, but they seem solid enough to survive against the wind. Looked at some ways of zip-tie'ing them on, but there's nowhere to grip.
They look strange. Being so flat you can really notice the curvature of the wiper arms from inside, but you do get used to that. Can't say I stare at the outside of my car for ages though, so you'll either have to try them yourselves or wait until I take a picture of the beast
As for performance, well they work just as well at indicated 80 (ain't been any faster for a while, soz) as they do stationary, so that's a HUGE improvement. They also splash much less water about on their return stroke. The bad point is they appear to create 'pools' of water on the windscreen. I can't describe it better than that I'm afraid. They've worked well in moderate spray, but I've yet to get them in some real rain. Actually I ain't cleaned the car/screen for a week or so, so the pools may be just caused by grease from spray on the screen...
These are the ones from Autobulbs (link earlier in the thread) by the way.
Rating: 4/5
(Standard Bosch ones 1/5 for sh*t fitting, and dealer-supplied ones 2/5 for being useless over 40mph)