the only thing i can think of, is tracking down a cuttlery maker, and ask them if they can supply some made in reverse.As far as i am aware, the bowl of a spoon ts created under pressure, by a hefty piece of machinery.
Rather than changing the bowl, see if you can get some spoons, before the bend is placed in the handle, and put it in yourself, the wrong way round.
Im guessing that the public wont notice this, untill you point it out. After all, they will be sitting there waiting for you to bend it, like everybody else does..
I hope this info is of help.