My dad had me baptized in the Church of Scotland as an infant. Consequently, my soul was already spoken for by the calvinist God long before a JW baptism would be permissible. And since I was never baptized in the JW cult, they could not legally disfellowship me. You would think that this fortuitous legal loophole would have protected me from being shunned. Not so.
After foolishly consenting to follow the two elders into the back room so they could determine my guilt, I was shunned informally. Again, since I was not baptized and thus not DFable, they could not announce anything during a meeting; but news of my apostasy spread just as quickly through word of mouth.
My friends (who had been aware of my apostasy all along, way before the elders or my mom caught on) stopped talking to me, but my mom (who is the only JW in my entire extended family) has always stayed in contact. Sometimes JWs from the local congregation will say hello if we meet in public and an older brother will still engage me in long theological debates which I am all too happy to humor, as they allow me to share my own knowledge with him.
All in all, I think my shunning experience has been pretty mild compared what I have heard from others. It's rather ironic (downright baffling, really) that only those whom I was closest to actually shun me now, while JWs whom I barely know will gladly converse with me. Maybe it's because the congregation here is not the same one as that which I grew up in. They didn't actually see me "DFd", so it's not as real to them.
