Ah I see, I don't really have any interest in any other sites apart from this and voyeurism on 8a.largepenis when it comes to climbing so only perused the link. I sometimes train back 2 half crimped but when it comes to pockets then I don't use them, the way it turns my forearm I would rather just use my ring finger since it feels safer to me. I'm cursed in climbing with my little fingers, hips and long legs not being able to do what my brain tells them to but hey ho.
So in a nutshell I wouldn't train my pinkies since the angle I would hold them wouldn't be transferable for me to any other hold type.
Or looking at it another way to quote Micky P "what the fuck do people train on fingerboards all the time for? What's that gotta do with climbing?"