But I'm used to interfaces for VSTs (audio generation/effects plugins) that usually have this exact interaction mode. See http://www.protoolerblog.com/wp-content/uploads/screenshot_O... for an example of one.
(Sometimes VST knobs also have the extra of horizontal movement being a "fine-tune" mode, even, which is very handy.)
But I'm used to interfaces for VSTs (audio generation/effects plugins) that usually have this exact interaction mode. See http://www.protoolerblog.com/wp-content/uploads/screenshot_O... for an example of one.
(Sometimes VST knobs also have the extra of horizontal movement being a "fine-tune" mode, even, which is very handy.)