i have nice calluses from all the heavy strength training (weights) and gymnastics elements practice i do. does that count? so as far as 'hard workin'' hands go mine r prolly pretty cool. i wouldn't call them pretty i have some crazy scars from when i sliced my palm open in two places (it was crazy looking it looked like i had a butterfly steak for a right hand, i forgot how many stitches i needed but it was bunch). then i top of my lh i puncturred two deep holes at the base of the middle finger where it meets the hand, those are crazy looking, i could see the bone. blood didn't gush or anything it just sorta keeping seeping/oozing out. crazy thing is i dont actually remember these hurting so much, maybe shock and adrenaline blocked it all.
i really should take better care of myself, i'm always injuring something from my shoulders all the way to my finger tips