Having had shoulder surgery, I can tell you that he'll be able to do anything that you only need one arm to do - what ever that might be. I can tell you that everything becomes more difficult: Eating, dressing, undressing, brushing your teeth, washing your face, showering & washing your hair (two things that you can't do for three days, by the way), typing, even sleeping. Yes, sleeping. Not only because of the unGodly pain, but because when you lay down on your back, the whole geometry of your shoulder changes. It wants to fall down to the mattress, instead of centered in the socket. The pain from that was enough to wake me up out of a sound, pain killer-aided sleep (something that Greg will not allow himself the luxury of) and relegated me to the sofa so that I could sleep in an upright position (or at least try to) for three nights. Again, pain killers can be a big help here (so can late night television). Greg will have to hope for really boring TV and a miracle from Advil. Everyone that I know of that has had both shoulder and knee surgery has told me that they'd rather have 10 knee operations before they'd have another shoulder operation. I'd prefer to skip both of them, moving forward. That said, my surgically-repaired shoulder feels like new. So much so that I could kick myself for not having it done when I actually tore it up 15 years ago.