It's actually worse than pointless, since the addresses used start with a 1 the same as bitcoin. This is something that the creators of the other alternate chains did not mess up! A terracoin address is not easily identifiable as a terracoin address.
+1 I think this was a terrible idea. What happens if we send bitcoin to terracoin addy? Lost coins?
I would hope that whatever you're doing with BTC you keep well separate from TRC. :-)
But I do hope they fix that. Just to be more clear.