Load Balancing Domino with Websphere Plugin

Have anyone tried configuring the Websphere Plugin to enable Load Balancing (or failover) of 2 or more Domino servers?

e.g.

http://publib-b.boulder.ibm.com/Redbooks.nsf/9445fa5b416f6e32852569ae006bb65f/e461407f1ef122a585256d5f00520962?OpenDocument