I actually think Musk has been pretty good so far.

Elia has been outstanding of late, just when we really needed him to be. Tragedy if he's injured and we're dependent on Musk and Head.

TRP stated we were looking for cover.  Problem is, there is no point in bringing someone in for the sake of it.  Using up the injury cap space when we may need that elsewhere (the way our injuries are going.  We have 2 centres fit and 2 FHs fit).  If you bring in cover it has to be worth it. 

Is there an injury update on Elia?

I have a theory....

We know Head and Musk are both fit.

Crumpton - Injured, due back in Jan
Buchanan - Injured, ??
Baldwin - Injured, seen it mentioned out till Jan, and also out for the season.

Ellia went off injured.

Head played for the A team last night, now if he was one of only two fit Hookers in the squad I doubt he would have played (We had a guest on the bench).  We could have got the game called off (Bristol called the game off against us a couple of weeks ago due to no THs)
So based on that, either

One of the walking wounded are fit
Ellia is fit
We have signed a Hooker on cover