Thank you for your comments. Just to clarify: the another alternate 12-string tuning I'm referring to involves a standard tuning plus an alternate tuning of the additional strings provided by the "parallel pitch" function. Or, to accomplish this another way, alt tune the "main" strings and standard tune the "parallel" strings. Either way, I think this is only 6 pitch shifts (unless the code to create parallel pitches is so lightweight that it can only double the existing pitch, in which case I guess you're correct in calling this "12 separate pitch shifts"). Either way, I hope there's adequate DSP power to do it someday. It's a nice effect.