I had a set of the CRG knock-off bar-end mirrors on my bike for a while and thought they were great until I broke one. I had a set of the Rizoma Reverse Retro mirrors that I bought off this board, so I swapped them out.
Mine are like this (in black):
http://store.proitalia.com/rizoma-re...-p-149498.html
I personally like them a lot better and find that they're more clear and offer a wider view without being 'in the way". Although I have mine flipped towards the outside, I've never had a problem with bumping them on anything; unlike the previous set of mirrors.
Looking at the Rizoma Retro mirrors you've picked; I can't see where you'll have any worries with them; even while lane-splitting, because of their design.
Again, IMHO, I think you'll be happy with them.
GL,
Franco