Hi, I'm the author of O::R::L. You may want to have a look at the presentations I gave on various YAPCs as well: may help.
ORL is also invisible. Even isa() and can() are fake. The use of 'use XYZ keyword' does NOT add 'keyword' to your namespace: it only calls XYZ::import(). When Exporter is used in XYZ, then the name-space is poluted, but not in the ORL case.
About copy: my docs must be unclear. It explains that there is the danger that there are two references to the UNinflated object. When one handle gets inflated, the other may not. Your 'inflation' method must take care about it.
Not handling AUTOLOAD? Why not? It should do that. Overloading is a nice idea, not in ORL... however overloading is quite nasty. You can use overloading on the lazy objects, but not automatically simulate the overloading of the inflated.
Be aware that ORL has already proven itself in various applications: it works. For instance, my Mail::Box module uses all corners of its power. As far as I can see, both modules try to do the same. But I don't mind an alternative implementation.