Good point. I was lumping them all together when they had a bolt or stud, but they aren't the same. Mine are not converted and use the OEM valvetrain, so "pedestal mount".
I assumed that with the dampener, it would be the same issue as a dual spring were only the outer spring is compressed. Good to know that in a pinch it would be an option.
I don't have either, so will probably go with the linked one that does them two at a time unless someone posts something better in the near future.