Re: ML\'s do go off-roading
I was at one point a factory trained mb tech. The ML is a solid piece, it'll never be a rockcrawler, but as a basic overland expeditionary vehicle it's very good. If you can put up with some of the silly convenience issues (window switches, fuel guage/pump, crazy cats) it shouldnt leave you stuck. And you'll be the safest SUV on the road.
I say just wheel it, no matter what it is. Tow straps, a lack of fear, and a buddy can overcome 90% of all obstacles.