It won't show up as a double comment when Asher compiles the report, so as far as that goes, you'll be okay. What I've been doing is taking the comment that musing generates to say, "To see this answer on musing, click here", and then just pasting what I submitted to musing in that comment. It's the same one—it just shows up differently on Steemit or Busy than it does on Musing somehow. I thought at first it could end up counting twice, but it hasn't so far. :)