I have used it on chicken & pork and it's good for both. I actually find it a bit mild for my taste. Bovine Bold is good for pork and beef. I buy it in small quantities at my local Bass Pro Shop to keep it fresh. It's a little pricey, so I usually reserve it for special occasions. My everyday fallback rubs are Bolner's Fiesta rubs from HEB, but they seem saltier than Plowboys to me, so I use them more sparingly.
BBQ Apprentice - Old Country Brazos offset, 22.5 WSM, Various gassers, portable grills, etc.