Well, since then, he's also become the proud owner of this Ellis frame as well, and he's written an interesting article about the whole custom bike experience for Embrocation Magazine's website. While it might not be the route everyone would choose, it is an interesting take on the process.
A link; http://www.embrocationmagazine.com/online/customs , and a pic of Chris' Ellis below.

Cheers, and a Merry Christmas,
Dave

I went with internal brake cable routing as well, to compliment the integrated Di2 wiring. The dark red panel on the seat tube is set off by a thin silver pinstripe.
In this shot, you can see the exit hole for the front derailleur wiring, and the vent window in the bottom bracket where the battery wire will enter the frame.
Stainless steel bosses for battery mounting, and the bottom bracket window. 

