@TbGbe @Pesala I had a chance to play with this a bit over the weekend, and was able to figure out what Pesala was talking about.

Yes, I think the Standalone installation option will work fine for what I'm trying to do. It would still be nice to be able to "integrate" multiple profiles into a single installation of the browser, but for my immediate purposes (keeping my personal data off of our work backup server) it will do just fine.