I am trying to figure out my options in Zeal glasses as I need something that can accomodate multiple lenses. I saw a couple models that had this in their description, but am trying to figure out if other models (like Rush and Zooni) can have the lenses switched like sliders as you there is a lens options available, or does that mean I have lots of options to chose from for the tint of the lense for that pair of glasses? appreciate anyone's expertise on this. thanks! -kari
