You can see it in this picture.
They are 4-5” up off the roof and you can walk between them to change out a microinverter.
I had to mount them that way so I could bolt the racks into the rafters.
I still used the portrait cable it just runs from the bottom to the top.
The landscape cable is more money and adds to much voltage drop.
I sent you a message on the panel prices let me know if you don't get it.