I use the Tifosi Tyrant with the "Light Night Fototec" lens.
It has a wide enough range that I can start a ride in bright sunlight, and finish well after dark, running lights, and I don't need to change glasses.
My past experience with interchangeable lenses was:
1. Every time you change lenses on the road, you have newly installed lenses with fingerprint smudges.
2. The flexing of lens and/or frame to make the change will soon result in one of them breaking.
BTW LCD screens (e.g. Garmin Edge) are polarized, so if the sunglasses have polarization that does not match the device, you have not be able to read it unless you turn it sideways. Cellphones normally use OLED screens, so they do not have the issue.
Last edited by Shimagnolo; 12-25-13 at 06:51 PM.