Does anyone know if you can insert the code supplied by Google for Adwords conversion tracking into the "last page" content and have it work correctly?

Plimus' tutorial for integrating Google Analytics was very helpful and I got it working, but there were several incorrect/misleading instructions. One in particular was the lack of explicit reference to use secure http when generating the code (and also the url was wrong). In Adwords, I made sure to change my settings to use https, so I should avoid that pitfall. My main concern is whether Adwords expects the conversion tracking code to be run from the original website or if it's ok to be coming from plimus.com.

I expect that it isn't a problem considering that Analytics works, but I don't want to start my ad campaign without knowing that conversions are being tracked, so if someone can let me know their experience with it, I'd appreciate it.