I think the answer is no, but I don't have access to my synth for a while to try it.
For instance, the Black Corp. Xerxes has (5) different velocity curves that can be selected to modify the data coming off the controller. It is a global function and not available on a per-patch basis.
So, does the selected Prophet 6 midi curve alter incoming midi velocity values, or is incoming data passed through with no change regardless of the selected midi curve?