It’s wouldn’t ever be, and a roller is a cheap, can get a dozen for $10-20

Painters just leave the rollers sitting in a bucket of paint thinner and use one of these for $20 to spin it dry.

But also, you can’t just reuse a roller for any other color or paint, they’re cheap enough that you use brand new and remove any complications for a new job. But it’s fine reuse yesterdays for the same client.