Dino is a much bigger piece of the band than Skolnik. Literally.
He also seems like the hard headed member of the band, so I doubt that he would agree to play those songs.
It's also cool that Byron and Gene are part of this. As much as I still want to see SYL, I can't complain. I have a good feeling that they will be reuniting after Townsend's 4 album solo project is completed.
8/20 High on Fire 4free
11/16 Judas Priest