I adopted the continental 9 months after taking up the game. Worked on it for 5 months solid - well worth the effort as likes other say, it opens up all sorts of options in terms of spins and consistency. I have a kicker which I can rely on 1st & 2nd serves if my flats and slices are not working on the day.
Was extremely difficult to get used to at first as I was trying to get used to swinging the racquet up to the ball 'on edge' before naturally opening the racquet face at the last second and then pronate after contact. It was comedy as I was framing the ball a ton of time.
Found that it has got rid of shoulder pain aswell. When I initially started, the frying pan grip serves did cause a bit of pain so another plus for adapting the right right technique.