Not really a scrambler, but definitely big!
Here's an older one:
And an airborne Goldwing:
There are more pics of that last one at this site: http://www.freewebs.com/mzrider/offroadonagoldwing.htm
I say go for it. It wouldn't take much to make a GL1000 or GL1100 into a decent gravel road cruiser, and they are easy to find cheap.