Nothingness: I don't think we ever had the ability to change time pace on BK (and certainly not in tournament games). I like Fisher clocks. I used to play on FICS, and I always use the Fisher clock. Little golem uses a Fisher clock as well. Yet, I never play games with the Fisher clock on BK. Because here on BK, Fisher clock implies no vacation days. And I know that during the year I will go on vacation. And there's no garantee at all a game or match doesn't last half a year. Or that a next round of a tournament doesn't start during, or right before my vacation.
Would BK have time pace of Fisher clock with vacation days, I'd never use the regular clock again.