I'm not sure how effective they will be on the flat wrangler windshield, but they are reasonably good on the curved windshield of the XJ/MJ. Nothing is going to help much when 3 inches of wet slush form, but they kept the blades from freezing into a straight stick and seemed to clear themselves a good bit better than the open blades. I consider them worth the effort. You still get the pile building up under the blade causing the whole thing to lose contact with the glass, but it isn't as frequent or noticable as with the regular blades. I've used them for about 5 years now and get them at Sam's for about the same price as a new Trico blade at the local parts stores.
Now, if some> I would be interested in that also. I really hate when the wipers get