Miryoku has a ton of great ideas. The biggest problem I assume is that switching to a standard keyboard, when you can't plug your own, becomes a pain. Same applies to the layout from the article, of course.
YMMV but I was surprised to find the opposite. Never been able to consistently touch-type properly before, learned it through switching to a corne with a miryoku-inspired layout and I now type better on the old laptop keyboard (which is not that often) than I did before.