Napolean bar end mirrors

anyone got some?
Im looking at getting a pair of them, but want to check i can get on with them before i buy some.
Ive got some mirrors the same size, and position, its just what image they give.

i was hoping one of you lot would be able to let me try out yours (you done even need to take them off your bike - as long as you dont mind me sitting on it though :p)