Indeed, it can be done. My first MF camera was a Super Ikonta III w/ a Novar, and the previous owner had his repair guy put a couple of strap lugs on it. Unfortunately I have no idea who did it, but I don't think it would be too expensive, and any competent repair shop could handle it.
It worked well for me, but carrying any folder is a bit inconvenient if you need a quick shot no matter what you do. Unless you're willing to sling the camera over your shoulder w/ it in the open position and a lens hood affixed. I did that for a spell, but wasn't that crazy about doing so. It was too easy to whack it against a door jam. Usually I just carry a folder in a side bag that has my journal, pen, etc. If I think I'll be using it quickly it stays open and in my hand.