Yeah they had a touring bike called the Sully, and i'm curious if it didn't sell because of poor marketing, poor performance, or it was too radical an idea at the time for the touring crowd. or perhaps all of the above.
a rep at softride told me they discontinued mtbs because there were 'issues' with the beam that dual suspension bikes didn't have. But the problem didn't exist on their road bikes, so thats all they sell now. He then reacted like he made a mistake mentioning it and wouldn't go into it further.
I'm guessing that the issue has to do with beam instability from lateral forces (side to side). But i don't plan on touring much on singletrack, just going straight on paved and dirt roads. so perhaps it would work? And after minor back surgery, plush would really be nice.
I found a cheap beam mtb frame on ebay. so i'm going to load up some panniers and again with the bob to test the concept. i'll post the results later.
here's a pic of a softride touring bike http://www.classicrendezvous.com/USA/hollands_softride.htm
btw, a lot of people ride dual suspension on the Gr8 Divide and have linkage problems. Maybe this type of bike might solve their problems because it has a fixed rear triangle.