Per Application Mappings

With Ben Forta's announcement in regards Per Application Mappings, it brought up the topic of "How is it being done across the different CFML engines?"

<CFMAPPING> was introduced in BlueDragon 6.2.1, whereas in Scorpio Per Application Mappings will be supported via Application.cfc

Reading a blog posting from Vince Bonfanti from a while back, it looks like NA plan to introduce support via Application.cfc as well (at the time BD didn't have Application.cfc).

The nice thing about NA's implementation is that older applications which still use Application.cfm/onRequestEnd.cfm will have support for the Per Application Mappings ...

And I believe Railo supports Per Application settings as part of it's core architecture. See the following blog post by Gert Franz

It's all good stuff, though maybe not exactly compatible across all the engines.

So, who's approach is best? What are the pitfalls of each?

Why not come along to Scotch on the Rocks, where we have folks from Adobe, New Atlanta and Railo and ask them directly.