Was cabling today all this setup with extra levers. Grrr...nightmare!
I think it could be nicer to remove foam from aerobar, and then mount cross levers at the end of aerobar, looking backward (on photos they are looking forward, and currently I left them like that). Then most of cabling will be nicely closed by bar tape one will use instead of removed foam. And everything will be almost ideal... but then I will have big cable loops extending forward, not sure that I want to try it.