I am curious if the gas conduit is supposed to work like the fluid conduits and handle multiple gasses on one conduit or just one gas per conduit?

It behaves like a normal (not the Ender) fluid conduit - or the Mekanism gas conduits - only a single gas type at a time.

thanks :) mekanism is single.. i was hoping it would do more now that the versions are compatable .. :/ maybe in the future having a option to do multiple ?

I can't tell you how much I would love it if the gas conduits could handle multiple Mekanism gases. One of my favorite features of the conduits is to assign color channels to inputs and outputs. It makes IO networks so tidy and organized!