metal halide

Just wondering what benefits is their of induction lighting these days and why do some buildings use it, such as the Philips induction lighting that is used to light up the faces of the Great Clock of the palace of Westminster (Aka Big Ben). The article below lists several benefits of induction...

Are ceramic metal halide lamps interchangeable with non ceramic metal halide lamps or do the ceramic ones need different control gear? I am thinking of getting this light fixture: http://www.toolstation.com/shop/p27660?table=no and this bulb to go with it...