Isn't there a fear that candidates will be worried about being thought of as the "Jopwell guy"? Seems inevitable if Jopwell is thought of as the place you go to add minorities for your team, e.g. some individuals will think of them as affirmative action candidates, and the candidates themselves will be afraid of being thought that way.
I suppose it's not an issue if the strategy is to be an invisible intermediary, so people wouldn't where they came from.