This is also one of my concerns. I am now using OpenSEF along with the JoomlaHacks SMF Bridge (site.com/forums/...), Gallery2 (site.com/photos/...), DocMan (site.com/downloads/...). Each of these only uses the first word for SEF and the rest remain Joomla.

EXAMPLE
www.unlimiteddirt.com/offroad/

I've tested this component a while back, and it appears to be doing very well these days. My problem is that I too have OpenSEF, which generally works very well. I will make a partial backup and run one of those sites and see how it works. Thanks.

For the sites without any SEF at the moment, does every site using English have \"/en/\" in the URL?