In my experience it does not. I started using armorsmith pretty early on due to more intuitive scaling (imo) and it was the same price as full access to pepakura. From what I did do with pepakura tho, the dashed border on the printout is the physical border you see on the screen.
When you fit things on the screen it should be the same on the page just imagine the paper being that little bit bigger to ensure that no pieces bleed off the page when printing.
Someone feel free to correct me but I don't think it affects the scale, it just restricts how you arrange the pieces on the page bc you "lose" a little bit of space on every piece of paper.