Our dev environment is usually a lot slower/bottlenecked than our production environment. The page is coming up almost instantly in dev. Granted, I'm only loading two .css files (one I made, and reveal.css for the reveal plugin), but I'll play with it some more, adding many large .css files to see what impact that will have.
So far, I'm quite thrilled with using sessionStorage for the CSS.
If anyone knows of a website that can offer ColdFusion help that isn't controlled by neurotic, pedantic jerks* (stackoverflow.com), please PM me with a link.
* The neurotic, pedantic jerks are not the owners; just the people who are in control of the "popularity contest".