just a few more words to explain ...
MOTU (who have indeed been very helpfull) obviously had the impression machV works good with VSL (what might be true regarding performance, streaming, ect) but in our tests it turned up that especially the very complex performance elements literally *exploded* and would need an awfull amount of work to remap them to a usefull instrument.
furthermore it seemed to become neccessary opening another track of development for the performance tool which was almost impossible due to the lack of free capacities.
for those among you who might assume now that VSL maybe just didn't pay enough attention to this important platform for mac - we had a similar (if not worse) problem regarding EMU-X and had to focus on HALion and kontakt, which simply have the advantage to be cross-platform.
christian