The pre-bends with compression fittings give away the riser as EMT.. Likely a new shop that hasn't invested in a 555 bender yet. If this is in So Cal Edison, PG&E, SDG&E, LADWP or any other So Cal utility territory, I'll bet they refused the EMT as an attatchment point and someone dreamed up the RMC "Pole"
No doubt that "Tijuana Joe" did the service/mast with EMT, got rejected by the inspector, came up with plan "B" to provide a suitable point of attachment and the rest is history.
As crappy as it looks, there's really nothing illegal about it. NEC doesn't say that service entrance conductors must actually be inside of the mast and I seriously doubt that any POCO would have such a requirement in their construction standards.
One pet-peeve though: I really hate when people use LBs to make a directional change on the same plane instead of a bend or ell. There must be a more professional looking way to do it. It just looks so "Harry Homeowner" when people use LBs like that. Again, just a peeve.