yea, well I suspect that Taiwanese knives in Japan would be like Filipino knives in the USA... soldiers bring 'em home... there was a small amount of toursim blades made for foreign soldiers... doesn't mean they don't work, just not entirely traditional I guess....
However the aboriginal knifemaker, Nmah Yioudau, in Hualien County (NE side) still makes traditional blades and if my parents can't get them for me when they go back to visit my elderly grandparents, I'll get them myself when I go back to visit (been setting aside money from my budget for the plane tickets)... yay for Taiwanese heritage!