I get the same feeling of open-mouthed joy from it that I get from any other Miles Vorkosigan story. It's just that this is the first Vorkosigan story I've ever read that had that Vorkosigan flair while not being written by Bujold. And, OK, not being about Miles Vorkosigan. Or so he says.
This is where I really started laughing: "Disclaimer: J. K. Rowling is watching you from where she waits, eternally in the void between worlds." A few chapters later, I was in love; it's going to be a three-way wedding; me, the Time-Turner, and Eliezer Yudkowsky.