OK, here are Scáth's options --
He can do a Move Through (which is basically what you've described). This does indeed add 1d6 damage, but Scáth will take STUN and BODY equal to at least half of what he inflicts, will be at a minus to hit (because of the ghouls position he will still hit this round), and will be slightly easier to hit if one of the Ghouls tries for him(there's a slim chance he'll take damage equal to the full damage he inflicts). If you go with this one, roll one more d6 for damage.
He can do a Haymaker (it will look similar: he'll fly right up to the Ghoul, 'wind up,' and swing). This will make him much easier to hit if one of the Ghouls decides to try for him (unlikely), but will double the damage he does with his attack. If you go with this option, roll two more d6 for damage.