Worked Great for Me in WordPress 3.8

I chose to point two domains to the same directory, in hopes of keeping a few relative links in order (while our company switched names) and it did exactly what it was supposed to do.

I haven’t tried the different themes yet but simple enough plugin in place of the “multisite” options I would normally use.

I tried a variety of simple to complex themes in the Primary Domain and again no problems.
SURPRISED! 🙂