Our client wants to record visit ID in an eVar and we were looking for some kind of solution. Is there any way to do this with dynamic variables? And if not, maybe the concatenation of Visitor ID + Visit Number would work (also through dynamic variables).
With that said, I don't think there is a dynamic variable for Visit Number. Visit Number is calculated inside Analytics by default and not on the actual page so you'd need to use some sort of extra code and storage mechanism to have that on the client side.