I've been running the Grabbers (AT2) for a couple years now on my 1997 Outback.
1) they are not loud. I ran super swampers on another Soob - those were loud. The grabbers are quieter than a lot of winter tires.
2) they grip pretty darn good on road - wet or dry.
3) the sidewalls could be thicker. I have the 215/65-16 98T. Other sizes have a higher load rating, and probably have thicker sidewalls.
4) tread is wearing very well. I think I have 20,000kms on them, and have only lost maybe 2-3mm.
5) my friend has a VW Vanagon, and got the KO2s in 215/65-16. I compared them to my AT2s before they were mounted, and there is no way I would put them on a Soob. I don't know how you would get any amount of sidewall flex on something as light as a Soob.