Pros:

-Complete Skin Pack (Skins, Icons, Huds ect.)
-Everything works great
-Moving is very smooth
-Everyone holds stuff correctly

Cons:

-Even if it's been turned off in the Addon Manager, Everyone's names stay the same (Atlas, P-Body, Chell, GLaDOS)

Conclusion:

Everything just works and it looks Fantastic! After you fix the Name bug, this will be Perfect!