Fortunately, I don't have a lot of problem with hazing on my interior windows. I've used the mf mitt (dry) on the interior for dusting, but not for specifically washing interior windows.
The reason for this is that the mf on the mitt is similar to the Miracle/Magic Towel where it has looped ends and not feathered or split ends like the Viper Glass Cleaning cloth. This makes for larger beading which if not removed makes the glass look sloppy.
I've been very happy with my Viper Glass cloth, but the secret is to wet it with water and WRING 'til the cows come home!! (in other words, as dry as you can get it). Now you can apply any solutions you wish (or plain water). I usually follow up with a second Viper cloth or a Miracle/Magic Towel just to buff everything down and make it look snazzy.
By the way, my glass cleaning solution is a 1/3 mix of vinegar, water, and alcohol. Seems to work pretty well, but some people may not like the smell (which goes away pretty quick, anyways).
Prinz - Go ahead and get the mf mitt no matter what. I think you'll find that you'll love it for paint washing. I think that it works really well and I've not noticed any scratching.