Making two PCBs out of one project

V-cut have to go through whole panel. Do you order whole panel? If not than your PCB is probably on one panel with others having different dimensions - no way to have straight line through the panel. Or they make panel containing only your PCB - all panel processing costs are divided by 1 order.

But you have a right to have holes (different shapes) in your PCB. I use it often ordering PCB (single PCB) like I showed here: