Apparently Scotty from Allister and Rivers from Weezer are recording an album together in Japanese. Rivers has long ties to Japan as seen on Pinkerton, particularly in “Across the Sea”. There is a video at that link of them recording.
More importantly this confirms (and explains) that I did see Scotty at the recent Weezer shows in Chicago. He walked by me too quick to say ‘hi’, but I was fairly certain it was him.