I like the Take-A-Look mirror in most every respect except wearing it on my glasses it is too heavy. Riding Texas chip seal the vibration, sweat and weight keeps pulling the glasses down.
I bought the Take-A-Look mirror after "loosing" my Chuck Harris mirror. (at least I think it is a Chuck Harris circa 1985) Then I "found" my Chuck Harris mirror and while it has a smaller mirror when I use it it is dead on where I need it to be view wise. I can move it from one pair of glasses to another much easier then I can the Take-A-Look mirror and is certainly a lot lighter.