Looks like a Keychron from their low profile series.

>It's a work of art, a brilliant one, but Joyce is like a comedian with an extremely specific and absurd sense of humour who doesn't care if anyone else gets the joke.

I like that, that tracks with my take on him. He's certainly a genius, but quite possibly mad as well. Reminds me of Danielewski's House of Leaves in the scope and innovativeness, but also in it's convolution and opacity.

I wouldn't deny anyone the enjoyment of slogging through any of these books if that's your thing, but I don't personally enjoy struggling that much with a leisure activity. I mostly read for fun.