UNlike the street, forget you have a front brake. Even the POS front brake on a BMW airhead will lock the front tire. Not good.
I have ridden lots of dirt/gravel roads on my airhead and it isn't too bad. Not like a dedicated dual sport, but remain calm, let he bike find its way, and you will be okay.
Just how seriuos are you going to ride? Casual use, yes, serious ADV take no prisoners mud plagging, there are much better choices.
For the love of Baldy, would someone please buy my bikes?
For the next several days I will be telling a true abdenture from my own life. It seems harrowing, and will involve a sighting of Richard Gere, but I want to share this for many reasons.