Ghouly - Graveclaw would get his arse kicked by Vlad.
Secondly I have to be blunt, and that is you are hardly posting? I know you have net problems at the weekend but you hardly post during the weekdays either. Don't get me wrong, I understand you may be busy elsewhere, but if you are not going to post it is only fair that if Graveclaw is needed for planned plots someone else RP's him.
So for the times you are not on, I think it is fine for LoR to RP him. Of course if you start posting more that won't be an issue.
NB: Vekky has advised he is a tad busy at the mo, so I will be taking control of his characters for a short while. If anyone wants to help me with it let me know.