well, he fell out with Purdy (I don't know why, I don't own a copy of the Bukowski/ Purdy letters), and he forgot about Layton. I do know that Purdy turned him on to Layton.
being Canadian, I've read a lot of these two writers...Purdy was closer in spirit to Buk, and he wrote about the same things fairly often.
Layton was a larger than life character, loved life, women, talking and being the centre of attention. kind of a Canadian Dylan Thomas, but with a longer life span. the media loved him, he was spirited and engaging and long winded.
but , to steal a phrase from Buk, when they were on, they were very good, both of them.
Layton was a blowhard, not much there, very boring. Much Leonard Cohen is the Canadian Jim Morrison. Though I like Purdy, Nowlan is where it's at (in Canadian letters). In Canada, no one's gotten as close to the bone as Nowlan (IMHO).
Buk was right, the Beats had their moment and the English Doctorates are simpering, gutless cowards.