If you live that part of the world where Odins are not available then Pocket Wizard mini/flexes can do the same.
I am currently driving 8 flashes off mine at the moment for some serious light
At the other end, for walkabout I put a 430EXII and mini on the hotshoe and get hss at full power
Doesn't the Pocket Wizard Mini TT1 http://www.pocketwizard.com/products/transmitter_receiver/minitt1-canon/ have the huge advantage of massive power savings in HSS mode? This is huge if you want to do a continuous burst and need your HSS output to keep up for at least the first few frames of a 10FPS burst.
If you only ever need single frame then I guess the Odins might be OK. But why not travel first class? I'm looking at the PW setup and checking compatibility with 5D3. I know 1D4 compatibility is fine.
Wicked Wombat, thanks for the link to the triple hotshoe adapter. Cool!