I could be wrong, but I think everything in the Login package will take hooks already (which are really postHooks). IIRC, they all extend the LoginController class.
Thanks Bob. I'll just try it and see.
Let us know if it works.
discuss.answer
Well, after looking through the confirmRegister docs, I decided to write a plugin to run against the onUserActivate event which is fired after the confirmregister snippet completes. Really minor change to the original posthook I wrote to make it a plugin and grab the profile information for the user object that gets passed to the onUserActivate event. All in all was easy peasy lemon squeezy and IMO the correct way to populate only "validated" contact data into other systems. At least I know the email info is correct.
Thanks much for the assistance!