I raced on a couple of Charles Roberts frames in the 1970s. They were both a bit stiff and jittery, but nicely made in a subdued manner and definitely raceworthy. If it fits, why the hell not?

When you're shopping for used frames it's best to have a few guidelines in place, like size, quality, purpose, and age, but you need to keep an open mind. If you're too focused on one make you might miss something totally extraordinary, like a Follis or a 3Rensho.