I have mine done becuase it's the only way I can have decent nails after 33 years of biting them. I've had them for the last 6 months or so and love them. Mine are really quite short, and rounded, so they do look like my real nails as long as you don't examine closely, then the thickness gives them away. But i like the feel of thickness, and now I am used to them can do pretty much everything I could with my own - doing up necklace clasps is a bit tricky still.
I always wear a dark coloured polish, and do an extra topcoat myself every other week, then get them infilled the other week.