If you start at the top, how do you cleanly stop at the bottom ?

I start at the bottom of the drop, very close to the cable housing itself so the starting lump doesn't show. I also cut obliquely the tape to about 60 % of its width so that the first turn is done gradually without any kind of lump.

Regarding the housings, I run them all the way, ergo style. The only drawback I see is that I need a rear cable in front and a tandem rear cable for behind.