Before getting my machine I thought I would never use the passthrough – I don’t really have a use for making very large things in stages. But it wasn’t long before I realized how many other use cases there are. The biggest one for me is that a lot of materials are available in 12"x24" sheets and I don’t have to deal with trimming them down to 20". And as you pointed out, it can be helpful to use all the parts of the Proofgrade.
Same here. I just didn’t like the idea of being constrained or feeling as though I would miss out, so I bought the Pro (also the power increase). In the end, I really appreciate having the Passthough and I haven’t even used it for the original intent.