His hand wasn’t severed by his father during a duel, but rather it happened accidentally while in a car as he rested his hand on the window ledge. He isn’t a Jedi Knight in training, but rather a 19 year old university student in England. But Evan Reynolds is cool, no doubt. His accident was unfortunate, to be sure, but as a result he is the recipient of an amazing prosthetic hand. Skywalker style.
He needs to wear a black glove over it and — more important — recover the lost hand, otherwise it might be used to create an evil clone of him in the future. You never know.