This is getting back to you pretty late, but I was the Yin he met. I managed to get this, though.
There was a photographer there (yeah, just one, but there were two cosplayers, so the ratio works well), but I haven't seen any of the pictures.
Semi-related note: your boyfriend was awesome. That shoot was really just tragic and his positive attitude really helped salvage it. I'm really thankful he was there.