Still, the feel is different enough that it would bother me to have a good portion of my chips in a mixed set of both to be from CPC.
We're a picky bunch of poker chip nerds. But I think a lot of this perceived issue is imagined and not really relevant when playing a game of poker. You may see a difference when using a weighing scale or ruler but not in a game.
I have heard say that you should not mix standard weighted CPC chips with body dayglo CPC chips as the weight difference was noticeable. Probably over 20 PCF members played with my set last weekend and not a single one stated that it was noticeable that the blurple 1s were heavier than the unweighted fracs, 5s and 25s. And if they did notice, they certainly didn't say anything.
I think if you're mixing CPCs with minty TRKs it's not going to bother you. My Money Tree set fits in this category.
If you're mixing CPCs with nicely worn in buttery TRKs then it may be a problem. My Pick Hobson set is all TRK other than CPC fracs so it's not so noticeable but it's also why I have Nevada Lodge 1s in there instead of making CPC 1s.
It's definitely a personal thing but I'd say try it in a game before you dismiss it. Picky poker chip nerdery has little relevance to 99.9% of your players.