Just thinking again about this - it feels like the incentive to record and put out Alan Shorter was more a Polydor/Polygram thing than Verve. At that time I think that the European Verve imprints were Polygram pressings. Thinking about it at the time, Polygram here in the UK were linked up with Marmalade, who were putting out SME, John McLaughlin and (a bit later) Clyne/Carr so Alan Shorter on Verve/Polygram doesn't feel too outlandish.
Having said that, around the same time in the US verve were putting out left-field things like Marvin Stamm 'Machinations' so maybe they were testing the waters somewhat.