Depends mainly, I suggest, on the consequences of going off the side. If you could go back to the 1980s, you would find in the Boeing manuals quite a lot of guidance on such things as partial-gear landings, but it was all taken out at the behest of their lawyers, who were fearful of corporate liability. So, thanks, you lawyers, we are now worse off than we were before.
There are so many variables: not just obstacles off the edge of the runway, but also crosswind effects to consider - and, no, I don't have the answers. General industry experience of airliners landing with all gear up (usually unintentionally) is that they do not suffer catastrophic damage.
Just my view.