Wonder how long until he'll be referring 6 nations matches. Also how long until he feels he is ready to referee Quins matches. I think I read somewhere that it is largely up to him. Few more years and most of those he played with will have retired or moved on, which probably makes it easier for him in his mind to be completely neutral.
I think he's a great ref but wouldn't really want him reffing our games as I think he'd probably be slightly harsher on us in an effort to seem completely unbiased