An extra partition makes no difference in deployment for a template. ALL it does is bring up the OS, apply the sysprep and reboot. Windows is already installed.
Also the extra parition is REQUIRED for 64-bit Windows 2008, so no way around that.
Plus that guy says it's not straightfoward...umm.what?!?! He says you can't simply install Windows 7, convert to template and deploy. Gee, that's fascinating considering that's ExACTLY what I did and it works fine.
So I would have to say he is incorrect.
Actually upon further review from the booth, he is talking about WIM (Windows deployment, NOT VM Ware deployment). That article is NOT for deployment from template. WIM is quite different.