From a flavor standpoint, knocking a guy back with a big flat piece of wood makes as much sense as knock a guy back with a big piece of metal.
Mechanics wise, while the debate between THW and S&B still rages on, I don't think anyone thinks THW is better than S&B.
So I say, why not allow Tide of Iron to be used with a THW? I think cleave and reaping strike are great at-wills, but for those who like tactical positioning tide of iron is a fun feat, and no reason to exclude the big sword wielders from it.
Mechanics wise, while the debate between THW and S&B still rages on, I don't think anyone thinks THW is better than S&B.
So I say, why not allow Tide of Iron to be used with a THW? I think cleave and reaping strike are great at-wills, but for those who like tactical positioning tide of iron is a fun feat, and no reason to exclude the big sword wielders from it.