Thanks, IronAndMetal! I’m going to mull it over. Amazon says that both have foam grips rather than solid rubber. The red one got mixed reviews, but the white one seems to be positively received. I have a particular idiosyncrasy that I have to watch out for. I like to lean back on my pull-ups so that I’m hitting the back a bit more than the lats. Not sure if the bottom-most cross-bar would interfere. But it might be worth the gamble nevertheless.
Still hoping that there is a product out there that has solid rubber grips, but not holding my breath.