When I did this at my house FPL handled all the service conductors beyond the meter. I provided the wire, they hooked it up. I wasn't sure if this was a safety issue or if they were just worried I might have a tap in the riser. I suggested to the engineer that I would pull in the SE, he said they would pull it out anyway. The guy in the bucket truck said he just likes to see the identification of the neutral at both ends before he hooks it up.
This may just be an "owner/builder" process.
