Well I've had the paddle shift fitted for over a week now and I'm glad I did it. I'm actually liking the flat bottom steering wheel more than the paddle shift. I like how you can activate the manual shift from the paddles without touching the transmission lever, its good for overtaking on country roads where you can get fourth gear quickly rather than putting the boot in and getting whatever gear the tranny decides to dish up to you.
A word of warning for those thinking of buying the genuine part of e-bay, you need to re-program the BCM for it to work which is a dealer only procedure unless you have access to the magic box !!