I've tried it briefly and didn't have much success with it (I also tried the bowl method). I never tried it in a systematic way as you mention in that thread. Then I got a chinese iPhone clone, had the MMC card problems and the poor 770 ended up kind of forgotten.

At some point I'll adapt that SD card to the 770 and play a little bit with it. But I might get a N900 before that and that will delay things even more. ;-)