My experiance with Networker modules is not very good, they can be 
difficult to implement, when purchased no way out of it, if emc does not 
keep up the development it may mean your production enviroment can lag 
behind, i.e Notes modules did not keep up with Lotus Domino versions and 
so to keep it backed up, server had to stay with lower versions of Lotus 
which is major drawback.
At some point Notes module completely stopped working, implentation was 
headach and recover were not full proof...
so unless you have money to burn and no one questining you go ahead, 
whatever u do use a test enviroment, download modules and test production 
client against it.

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