AS400 objects from a connection pool

I am using an AS400ConnectionPool to manage a pool of AS400 objects in my
WebApp.

The AS400 objects will be used to run commands and RPG programs.

To ensure the runtime environment for the RPG programs is correct I need to
setup the library list and LDA on the AS400 connections, before handing them
onto the App.

Currently I am doing this everytime a connection is retrieved from the pool,
but this is an unneccessary overhead when the connection has been recycled. 

Is there any reliable way of telling if an AS400 object retreived from
AS400ConnectionPool is "new". Is it reasonable to test isConnected(COMMAND)?

Or should I use a ConnectionPoolEvent? And if so how - the javadocs are very
terse.

Thanks,
Chris.