Y'know, I wear gloves too, just basic leather ones with no fingers. For $9, I thought they were worth it.
I hesitated buying them because I didn't want to look like some poser that wandered into a gym.
They help with my grip, and help a little with callouses, although I wasn't as concerned about the callouses.
I plan on using wrist straps for back day, just because my grip gives out before my back does.