kobacat - you can still query a different agent at JHA. It's probably best if you wait until the end of the agency's stated response time and if you haven't heard back from William Reiss by then, go ahead and query one of his colleagues.
I'm feeling a bit embarrassed. I queried William Reiss just now and, for perhaps the first time in the process, didn't check him out on querytracker first -- I was just so keen to submit! Got an out of office reply (in its baldest sense: it says "I am away from the office"), checked querytracker and the consensus seems to be that he's retired. No indication of this on the JHA website and it does seem that people have had replies in the meantime, all rejections.
Gah! All the JHA agents seem awesome and I could have queried a different one, had I done my homework.
He got back with a short polite no -- which is very classy of him!
Onwards.