At the recommendation of @daveo we visited the "Victoria Main Shop" in the Kanda sports district of Tokyo. It was nice to see carving gear on an actual shelf.
Some in-stock items: Kessler 168, Mountain Slope, UPZ, Ogasaka, Deeluxe, Moss, Iron Rock, SG, F2 Titaniums.
Upside: you can actually see these things in person! Downside: prices seemed higher than retail in North America.
I just thought I'd share with you!
Edit: Disclaimer - I have no affiliation with this store or its products whatsoever! I just bought a cool stomp pad when I was there.
here's one for @barryj