I'm a fan of Shem, so Sem is ok, but looks a bit bare, if you know what I mean. Indy is ok, I'd prefer it as a nickname (I adore Indiana, nn Indy for a boy).
cute!I like how spare they are. It's very Ikea. It's neat to see another Indy - I have a friend with a little sister named Indi (she was named after Dr. Jones). I like Sem a whole lot.