Theoretically, yes - E.S.P. responds to Sysex in the same way that Montage M does (it's how the new E.S.P. DAW remote works) but Yamaha haven't documented the addresses for the E.S.P. parameters in the same way as they do in the Data List for Montage, so until they do, I can't make KDx talk to E.S.P. - trying to reverse engineer all 5000+ parameter addresses would take me literally forever.
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Kier