I think the point is if the RN decides to MODIFY a Khareef or another OPV design into a Type31....What options they offer then (including accommodation} one stated intention being that they would attract sales from "smaller navies" etc
I like the Venator myself or a Damen Crossover variant as a "step up" for the NS.... if they chose to modify a P60 rather than a River I'd be VERY interested to see their designs.