A few people I ride with have them but not the full on ones with the metal bit, just like a little flap that sits in front of your hand and levers to stop dirt. I have some, but there over kill.
ta I agree they are an overkill but I think im gonna put mine on. I wouldnt have to replace my clutch lever if i had them on. by the way the jump on my avitar is the one that broke my rib, dammit Pain killers are not enough.
The ones with the metal bit that actually connects on to the bar ends are worth it... Just meant the plastic fantastic no strengthen ones are gay! But I have some pinks one I might put on a bike some day ha ha