Stuttering John Question

I am a long time Stern fan and much more of a morning person than an evening person so I haven’t seen Stuttering John on Leno yet. Well, last night my new dog was loudly objecting to his crate so I was up late enough for Leno and it was a rerun. Curses! Anyway, who has seen John and how’s he doing? Howard hasn’t mentioned him.

He’s supposed to start on Leno’s show 3/29.
Howard just mentioned him this morning.

Thanks! I thought he had already started.