Generally though if your putting a dob onto a EQ it would be for no other reason than to use it as a astrophotography platform where height and orientation means nothing.
the issue though is getting a mount that can cope with the weight requirements of these scopes. sure they can track but need windless nights and any errors are accentuated by the high loads.
But it isn't impossible at all. its quite a easy modification to make. a few drilled and tapped holes a radius block each end and a dove tail. done.
I was thinking of getting a 10 inch collapsible dob and am feeling that soon enough I'd get sick of nudging it to track objects. An eq mount would be far more appropriate for that.