I was a bit surprised Premier Tech didn't manager to bring over a few more of their own guys
It wouldn't surprise me if Houle hadn't had some sort of clause in his contract which, in the event of Premier Tech stopping sponsorship for whatever reason, allowed him to leave for whichever team they ended up at. Of the guys you listed, he's the only one who I would say is one of "their own guys" and obviously has a very close relationship to the sponsor.
Of course with Adams no longer on the scene, both major Canadian links have gone (though they still have Canadian staff and Boivin/Cote) and any future Canadian stars will probably lean towards Alpecin now rather than anywhere else.
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Some other snippets of info:
Maranchon says he isn't signing for a Swiss team. Bit of a shame to lose out on both him and Frigo Jr.
Vernon will start his season Down Under. Does that means Strong won't be there? Not sure.