I don't see any good reason whatsoever to have the mono backing.
With you Brandon.
Here's a quote from a manufacturer of braided line -
Myth Busting: The truth about line slipping on the spool etc. Many mistakenly believe that braided line will slip on the spool unless you take Draconian measures to prevent it. Experience has clearly shown that putting on several layers of mono, Dacron or duct tape are totally unnecessary. This practice is not recommended to solve a problem that does not even exist. Braided line grips the spool much like tread on a tire grips the road better than a smooth one with an infinitely small contact area.
Before you start spooling, form a good knot, (such as the Berkley Trilene knot) cinch it tightly on one side of the spool leaving a long tag end to be laid across the arbor. Spool the first full layer of braided line onto the spool in a close side-by-side fashion under tension of 6 or more pounds over the tag end. If this is done, the line will not slip! No exceptions have been reported but try pulling on it at this point if you have any doubts. When convinced, you might tell a friend that it works.