Richard-
I would assume that the Accusump would do as good a job as the
oil pump in
oil distribution - also on an edgy race engine we always made sure the
oil was thoroughly warmed up before doing anything which I think has as much of a benefit as making sure there was pressure before hitting the ignition.
Your question about is it really needed with the relatively mild engines that most have? I doubt it - but it doesn't hurt!
Pat