My PB w/English keyboard is now set to French. Unfortunately, I cannot touch-type well even in my native English (and even when I really get on a roll, as I am more from the old hunt-and-peck-quick school). And in French, which tongue-ties and finger-ties me to no end under any and all circumstances, I cannot touch-type at all.
I am currently using the Apple bluetooth French language keyboard, but when I need to go mobile with the PB I will fall apart because it is in English format.
For the time being I'd rather use a French language keyboard on the PB and have the capacity to switch the keyboard/keycaps back and forth. Many of the keys are quite different from the two languages- not so much the letters, more so the numbers & symbols.