OpenVx where all the nodes are custom nodes or user kernel and nodes

Hi Experts,

Let us assume that I have SoC, which does not support OpenVx.
My product does not need any OpenVX API for image processing.

Hence if my impelement a graph with all custom nodes (user nodes) and run it on the silicon, can you suggest what all the pros and cons of this kind of approach.

-best regards
Pradeep Kumar