Hervey is probably the subject of Vinsfeld's envy, and it's for a few reasons. For one, be belongs to the most successful pirate organization in his world and is the right hand man of it's leader. Well, one of them anyway. Can't help being one of the Suikoden yaoi knights. He's also a fairly competant underling, which Vinsfeld certainly could have used in his quest for his pure ideals. And lastly, he doesn't have to come back from the dead to get a competent battle form. That's check and mate right there. Hervey's got fire and pure steel, which is always a good combo in any Suikoden world, and certainly enough to take down possibly the scrubbiest terrorist leader in any world's history.
