Not much, really. Libertarians trying to vindicate Ayn Rand is a perennial pastime among the true believers. If you want something more amusing, try reading Murray Rothbard's "Mozart was a Red".
The reason I thought monarchists would be interested is the issue of the normative to any social theory of free individual character of feudalism, that the conversation between Jackbob and me morphed into. I am curious to see to what extent the anarchist flavor of feudalism appeals to monarchists. I know it appeals to anarchists and hence to at least some libertarians.