Hi Colin, just want to give my point of view:
When using non-websafe fonts I always use @font-face fonts. I use the method "Manually specify @font-face fonts". In this way you have to use the fonts in correct way and you are sure to have the different fontfiles for each font-face and that they are working. eot, svg, ttf and woff.
As Pablo wrote "Automathic generate @font-face fonts" doesn't work for some fonts. But to generate this files before use in WWB works very well.
If you use this method the the font will work in all browsers. As I'm a font-neard (producing my own fonts) I'm very careful what to use and that it will work in projects and browsers. The manually "@font-face" method gives full control for the fonts.
As mentioned earlier in this thread some prefer "Google fonts", but I don't. My testing has proved that the "@font-face" method works faster for your site because the font is in the same catalogue as the project on your webserver. More secure! But this can be subject for a new Forum
Just wanted to share my experience and point of view.