I bought a Griffin Lapel Mic, and I couldn't get it to work at all. The biggest mistake was to buy it from some two-bit online retailer in the UK who are as much use as a chocolate teapot when it comes to dealing with the possible faulty item, and whose customer service is total crap.
All I can say is that if you live in the UK, buy your iPod accessories from either the Apple Store, or from a retailer with a good reputation for customer service and a no quibble returns policy, such as John Lewis.
What do they say in business? A satisfied customer will tell 2 people, but a dissatisfied customer will tell 10 people.
So far the Griffin Lapel Mic has been a total waste of time and money, because I was sold a dud one, and this dodgy online retailer, based somewhere in the west of England won't deal with it. But they'll take my money quite happily. Can't stand this way of doing business.
Has anyone had any luck with using the Lapel Mic with their iPod? It's a great idea, shame my experience has been soured. Will try another retailer, though, if someone reports back and tells me they could get theirs to work. As I said, great idea.