Do you have a Visualforce override currently set on the Assessment object? I think using record types might be a good idea, since I don’t know how, in a normal Visualforce override, you would specify one page for Opp Assessments and one page for Lead Assessments. Another option is that you could handle deciding where to redirect to in Skuid, using a custom renderer. ln that situation, though, you’d have to include the custom renderer on every page where you want Assessment to link properly (so really, I think record types are your best bet).
