Harrow,
I've been a serious racing cyclist for many years and have always scorned those who warned about potential dangers "down there". Well, what goes around comes around: I have developed a "second set of equipment" i.e. severe swelling damage to my perineum, may require surgery. As far as riding a bike is concerned, I can't.
So.. be warned.
p.s. I know that you can get (not in u.k. I don't think) something that resembles a regular saddle but basically consists of only the rear part so the tender bits don't, for want of a better term "get squashed". It's call the "un-saddle" and was developed by a 1970's racing cyclist who's proffessional carreer was cut short by permanent pereneum damage. Time trialling is a sure way to place even more stress on that area. So please.. be creful.
Best regards, Dave.