Just for the sake of education, whether or not you go with this option, I think it's a discussion worth having.
I assume your two cables would be (1) power and (2) communication.
For the power cable...
Refer to 225.4 and 310.10(C), which address "conductors in cables or raceways" for outside branch circuits and feeders.
Basically it needs to be "rubber covered type or thermoplastic type... and in wet locations, shall comply with 310.10(C)," which lists a few acceptable conductor/cable types for wet locations. You also need an EGC, which is permitted to be bare or covered.
225.6 says "Open Individual Conductors shall NOT be smaller than... #10 AWG Cu / #8 AWG Al for spans up to 50ft... and #8 AWG Cu / #6 AWG Al for longer spans... unless supported by a messenger wire."
I'm not sure about supports for CABLES as 225.6 is explicitly addressing "open individual conductors." I would wager that a messenger wire would be required for your installation, but I don't have a code reference to cite for CABLES in aerial spans.
Does anyone know if the NEC addresses this? There has to be some rules addressing CABLES in aerial spans...
225.18 addresses Clearance for Overhead Conductors and Cables. 12ft for residential driveway.
I think he is just running CAT5 for PoE cameras, no class 1 power involved.