I prefer to keep conversations in one place in order to make it easier to follow them. Therefore, if I have begun a conversation with you elsewhere, that is where I would prefer you reply and is probably where I will reply to you.
If you have a question or comment about an arbitration matter it would probably be better to post it at the relevant case page or the ArbCom noticeboard unless it is specifically about my own actions.
I am an oversighter, but I will not be very active in that capacity during my term on the Arbitration Committee. If you need to request oversight, following the process at WP:RFO is the best route to getting your request handled in a timely fashion.