So, I mentioned before that I use a MacBook Pro. It’s a US MBP with a US layout. But I also use a Magic Keyboard 1 and Magic Mouse 1 with it when I’m at my desk, and the keyboard isn’t US layout. It’s JIS layout.
See, I started using this layout when I bought a copy of Pokémon Battle and Get: Typing DS for the DS. A Japanese copy. And I’ll admit, I do like the layout, even if I’m having to take time to get used to it again. Many of the keys don’t match the US layout at all, so touch typing isn’t all that simple for transitioning between the two.
The tilde/backtick key has changed to two keys, with the tilde being Shift + Caret (two keys to the left of Delete), and the backtick being Shift + At-symbol (just to the right of the P key). The quote marks are on Shift + 2 and Shift + 7 for double and single respectively. The Semicolon and Colon are separate, housing the Plus and Asterisk when using Shift. Underscore is its own key, and the Pipe symbol shows up as a Yen symbol (but can put out a backslash with Option + Yen). And the list goes on.
I have to admit, I like how the symbols are arranged in this layout. It can make it easier for me to type things out after a while, and while I still use the US layout, after playing Pokemon Typing DS again, it definitely feels more comfortable to go with the Japanese layout for long periods of writing.