Tynan said:
that looks huge and numpty and awkward, (sorry), that's really put me off this route
Visibility is a good thing, people realising they are on camera helps stop them from doing something stupid in the first place.
I ALWAYS put practicality, comfort and safety over style. The way I see it my natural good looks more than make up for my fashion crimes

.
Practicality is the only reason I wear lycra

. I have mudguards and panniers on a road bike

I wear a helmet in the first place let alone one with a camera on

. The only reason I ride a bike is because I think its a hugely practical way to get around, inspite of how it looks, not because I think it looks cool.
To my mind Lycra looks far worse than that camera, but I got over my reservations about wearing lycra due to practicality.
On a side note, Is that you wearing a football shirt in your avatar... I would guess we have very differing tastes. Whilst I dont think the camera looks good, I think its immensely practical. Its safetywear not a accesorized handbag. Although you can get "lipstick" cams which are more discreet, they have less of a deterent effect.