A UH-60 pilot wouldn't be able to start it, different engines (I think
the seahawk has 401's vs the 700/701C in the Blackhawk) and switch
setup, different limits, and would probably torch the engines on
startup, plus the Seahawk has a trim system on the collective, which
does something towards altitude hold. A few weeks in a simulator, probably fly it no problem.
Probably in the pattern it wouldn't be a big deal, but startup would be a no-go.