There are some stability concerns. Once JS libraries are updated in trunk and on WP.com (which follows trunk), the current version of the plugin may no longer work with stable WordPress versions:

@benlobaugh .com closely follows trunk, so this wouldn't work for stable WP versions. Wouldn't work for trunk either due to how merges work.
— Andrew Nacin (@nacin) December 16, 2013

@CalvinF it works fine for me, but @nacin pointed out some pain points re:versions. Easy to test on your site and see though :)
— Ben Lobaugh (@benlobaugh) December 16, 2013