No one would read him today (Along with accusing someone of being a fraud, that is the put-down du jour).
You might consider Revolt Against Modernity: Leo Strauss, Eric Voegelin & the Search for a Postliberal Order. Birds, a stone, and short lives.
Thanks. I will look for it. Having read a bit of Voegelin, I know he's quite difficult. He makes a suitable cohort for the famously difficult Strauss.