This is a brilliant integration of 2 modules. I had stared at the Attribute::Handlers docs 2 or 3 times and kept wondering what they might be useful for... and the examples in the docs did not seem to practical... "turn it up load man!!"

But you seem to have put things together into a good example of why these things are useful. Too bad I can't give you 2 or 3 ++ instead of just one.