I think my preference goes for grid keyboard like Chen, but because I believe I'm just more efficient and more comfortable at typing blindly with my thumbs than on an offset keyboard. It just feels more natural for me when thumb-typing. Not sure if it's because of long experience with the N900 or because the design is actually more adapted, but using thumbs on an offset keyboard always felt awkward to me. The unnecessary complicated layout made muscle memory trickier, and tactile-feedback was sometimes insufficient to know where my thumbs were when moving them on the keypad (but again, maybe due to less experience).

Originally Posted by DrYak

that's the current behaviour on Linux desktop.

Capital Ç is done either :
- with caps lock,
- dead ' then C
- compose then "," then C

(and digraphs are done with compose + individual letters. i.e.: œ is compose, o, e)

Ha, I'm using it every day and I did not even know I could type ç with a dead key with the default layout. I am using Alt Gr + , and it gives me ç (or Ç if I press Shift simultaneously). I'm using deadkeys for every other accented characters, and æ is already on Alt Gr + z, and œ on Alt Gr + k (shift works as well for capital letters), but I may have customized those Alt Gr combinations myself, I don't remember. But that's the point: flexibility on key combinations/dead keys just like on desktop could make most users happy.