One of the great things about skiju is that Skipper and Julien seem to be so different at first glance, but they actually have a great thing in common.
Skipper is brave and protects others and while he is known for this, Julien is actually capable of doing the same and already did indeed. Difference is that not many know about that or his past.
They can also learn from their differencies. Skipper being overly responsible would bring this side of Julien out more often and Julien knowing how to relax or have fun would help Skipper overcome his delusions and need to always be ready for everything.