Yes... not interval mapping, just choose the interval, the key, and off you go. Yes, as much as I can remember, the Custom scales are only on the Ultra.
Now, if we can only get the KEY controllable via a MIDI CC#, so we can change the key on the fly, and only need 1 preset, instead of 13 of the same with different keys... HINT, HINT, HINT... thanks Cliff !!!!