What please are some of the pros/cons of a tuxedo urchin? I don't mind the stealing of coral bits, kinda neat.

pros: look cool, with their deep royal blue color.
eats algae, keeps your rocks and tanks clean

cons: loose stuff gets stuck to them,
don't eat hair algae.

I've got 4 in my main display and 1 in my nano.
I think they live a long time, cause the 2 large ones have been in my tank for over 3 years, and they were probably a few years old when I aquired them.