Hi ya - i dont think your boy will notice any difference, I had Sox done 18mths ago and to be honest I have not even noticed a calmer effect!!
he is still as high as a kite and still climbs the walls. Im sure he will be a lot more easier to control
I was told that he would be docile for a few days, but the minute I saw him you would never have thought that he had,had the chop, even the vet was suprised how bouncy he was!
the only downside was that he was not allowed off the lead for 5 days and not allowed to go for long walks and he hated the lampshade he had to wear as he was constantly licking his bits! A few extra treats to take his mind of it worked, you will also have to move some of your furniture round if he has to wear a lampshade, a few of my things broke while he was wearing it.....