I have heard/read somewhere that people had a tendency to be dismissive of Kelley for his Westerns background? (Despite Nimoy being in at least ONE Western I love)

A bit of being the man so many knew as a bit actor/background character. Which is sort of sad, in my opinion. Nimoy and Shatner had a greater audience in the more spec-fic action genre, and got the bigger focus from reviewers.