the eva is a version of the ergo but it has its own name. that's what i'm thinking b/c the ergo totes don't come in two toned but the catalog shows it (it's the two pages where there's a mass of bags thrown together on the left hand corner for those who've seen the catalog)
but the eva can be considered the ergo tote, it's just bigger and i think canvas (since all the bags on that 2 page spread were canvas or ostrich leather)
we'll know when it comes out and when you get your catalog!