Thanks for the info. I actually went through a whole mechanical keyboard phase myself and went through several keyboards without numpads. I spent months using these keyboards, but in the end I found I was fastest and most comfortable typing on an Apple wired keyboard (heresy, I know). I much prefer the footprint of the Apple wireless keyboard, but I find that even though it seems like it'd be identical to the wired version, the keys aren't nearly as solid.

I am kind of curious about Topre switches, I haven't tried them yet. Only various Cherry switches.

I think the pinky RSI issue isn't so bad for me because most of the time I'm in a text editor with vi keybindings, so I wouldn't be using the arrow keys anyway. It's just nice in other apps to have that ability. In the situations where I do use my pinky, it's typically when I'm not typing very much, so I actually just move my left hand so my pinky rests over the Caps Lock key and doesn't need to move laterally. It's some movement, but still less than reaching over to the arrow keys.