im liking it now!it just takes a bit of getting used too!
im using the correct dosage of 1ml per 100L.for me the shine is really noticable.it really brings up glass, frames and sills a treat.much more than just using pure water.easier to remove snail trails too.
im still rinsing a bit more on some windows but im not slower/quicker than i was before (now!).
also i seem to be able to reduce drips from dodgy top rubber seals far easier as vision treated water seems to "hang around" a bit more on the glass.
id go as far to say the finish on the windows is fantastic.ive also cleaned my van twice with vision treated water and its defo shinier than normal.