I recently played in an underground game which used $1/$5 Claysmith Poker Knights chips. My reactions:
Initially, I was just glad to see that at least we wouldn’t be playing with dice chips.
The chips were well-worn, so I didn’t have any complaints about sharp edges (which I’ve seen on some review sites). They still stacked neatly, with no warping/spinners, and shuffled decently enough, having a slightly rubbery yet smooth surface feel. They don’t have any of the subtle texture of clays.
That said, I felt they were way too heavy. After about a half-hour of shuffling, on and off, my hand was already starting to feel cramped (whereas I’ll go all night riffling Paulson's or ASMs without ever thinking about it). Officially they are 13.5g; it’s amazing how much difference a few grams can make.
It also seems kind of shameless of Claysmith to so closely simulate Top Hat & Canes. The Spade-and-dagger mold is clearly meant to look, at a glance, like a Paulson. I’m surprised that Paulson hasn’t gone after them for it, but it may not make enough difference to their business.
Sidenote: The table I was playing on had black speedcloth, and the cards moved very well on them. The one complaint I had about the speedcloth was that it had seen a lot of use, and seemed to have taken on a somewhat greasy sheen in places. Probably because the hosts provide pizza... Anyway, this game has been going on about a year with just two games weekly, and it definitely needs replacing.