Chances are, you'll break it again, and then would be the time for the corrective surgery. Not to say that as an omen or anything, but as an optomistic thing. Just thing, if you do break it again, instead of thinking, "Oh man I broke my finger!!>:(", you can think, "oh man, I can fix it now!:)" As long as it is functional, and the lump doesn't bother you, I'd chalk it up to learning experience and a somewhat awkward conversation starter. But there is also nothing wrong with wanting to get your finger back to normal either. If you've got the money, or good insurance, and the surgeon thinks it can be just like new, why not?
My bladed nunchucks are super sweet.