When talking with or reading / watching about professionals and their setups (acoustic instruments in particular), I found that there's a heavy tendency for using higher actions, in contrast with non-professionals where mid to low action is the norm. This extends to guitar-like instruments, like mandolins, vihuelas, whatever.
There's an obvious effect on the feel, but how is it affecting the tone? Does higher action accentuate the attack, the volume, or other dynamics? Is there an actual change in tone, or is it more of a feel preference? The later doesn't seem likely, since many of these people seem to be doing it "in the name of tone".
My understanding is that in electric guitars the tone is colored somewhat differently, so action is not as important in the tone, and is more a feel preference. Therefore, higher actions are more uncommon. But in acoustic instruments higher actions seem to be everywhere.
So, how is the timbre being affected that some people seem to be scarifying a little ease of play to achieve a different sound?