[khorboth]

I played with a DF monk who was totally mute. The player hated the character and retired him after only a few sessions.

I have used it a few times as a temporary disadvantage to reflect that the character's voice is being used for other purposes. Most notably on a DF bard-type character (before I found the bardic song modifier) where she could use psuedo-magic songs to make people stronger, faster, etc. but had to sing the entire time.

I've had it on my own characters a few times on alternate forms when shapeshifted into animals.