Not for me matey, everyone reacts differently to it, my brother's balls were like two spacehoppers for a fortnight, besides, I would never let anyone poke a Syringe into my nads, not for all the tea in China.
Hurt like fuck Dev. And they didn't use enough local anyway so I could still feel too much. General anesthetic is the only way for anyone who wants the snip IMO. Even then, as with your brother, the after effects are still awful. I had to wear a jockstrap for a fortnight and the stitches still got infected