i do it all the time and i can take hits a bit better, i disagree that it cant benefit you though because i was hit with a hook to the chin and then an uppercut with 16ounces in training and i took it pretty well compared to maybe how i used to have taken it.
I know what you mean. At this point though I've been training so long that I'm used to getting punched. I'm not really flinchy and I know I can take a solid hit and be okay so I'm wondering if that's more mental than chin durability. Maybe both...? I've gotten a concussion before but I never got knocked out or put on wobbly legs. I don't know why, I think I have a good chin.