How about one large dial with letters around it, press & hold, then swipe from one letter to the center to another. Tap the middle to change charsets. The thin

How about one large dial with letters around it, press & hold, then swipe from one letter to the center to another. Tap the middle to change charsets. The thing is all about muscle memory. I can type much faster than the guy in the video on my touchscreen QWERTY, because I do it so often. The same would go for these radial ideas. But how fast would you really start out at on either?