by rushing I mean progressing to quickly. it's like doing heavy partials reps. you can progress really quickly doing them but the problem is you accumulate damage really quickly too.
pace your progress and don't get too 'strong' too fast fast. if you're gonna use these for pullups or chinups, try doing them this style once every two to four chinup/pullup sessions. you're going to be doing this exercise for the rest of your life anyway so why not inject variety like this. I found this way to be the best because it gives the fingers flexor tendons
Thanks Tornado. Slow and steady is how i like to progress anyway.