Guilty as charged! for me tho as others have said, the advantages of the AD far outweigh the weight issue (which on the XL version is minimal) I tried the Extreme without the AD and didn't find any difference on standard windows, the only time I felt any difference was on windows over consevatories or in confined spaces, which would constitute about 1% of my work, so for me the AD stays on as it makes my working day a lot easier.