It turned up today, so had a quick go with it for about 40 minutes just trying different settings and techniques. First impressions, it has potential, its quite heavy on the window due to more surface area i presume, your clamps have got to be spot on or it will spin, you can still do the up and down technique, you do have to rinse a little bit. So after doing the same windows a couple of times, and changing head angles and mop position on the t-bar and varistream settings, it looks very hopeful, its deffo a completely different feel to using a brush, i get the impression bird dack wont be too much of a problem, when i first had a go i thought spotting was going to be a major problem because of the amount of drips on the seals and frames, but after changing where i started on the glass it becomes instantly natural if you traded for years before wfp. I'm just a little concerned about how well it gets into the corners and the very top of the glass on a couple of my upstairs windows, but it was blowing a gale and hail stoning so boxing day i'll have another go and do some vids so i can see what its doing. The windows dried beautifully, no spotting at all, in fact on one of my windows it has a right bad water mark which the brush never gets off, the pad seemed to get more of it off!!! Water consumption??? I'll know more in the new year, but i run my varistream at setting A for pause pressure, and 3 or 4 on flow rate, i found on this setting that after the water had been on continuously that it wasn't enough to produce consistent 'jets', on flow 5 its fine.... As for rinsing, yeah it is weird but brilliant Weird because at first, water just seems to go everywhere that you dont want it, then you get a slight hang of it and you immediately start thinking of the potential after using it for a few days. And it rinses and cleans beautifully but the top can be tricky, Occasionally the edge of the pad leaves a streak which needs rinsing, but rinsing is sooo much quicker with all those jets, i think it 'could' potentially save more water and be quicker, but '5 times quicker' as willie suggests???? I aint sure about that, hydrophobic glass rinses really easily. Its definitely is nowhere near as versatile as the brush of your choice, but if you like a change, like experimenting, or do huge panes then get it. Personally i will use it on and off but more on till i figure it out, use the brush for frame cleans, and the jetstream for maintenance.