i used to have a hurricanine (fury CtC wind wolf), and from my experience and tests, hard point do indeed synergize CtC skills.
with a rain runeoword armor and its CtC cyclone armor, me and a friend tested its absorbtion, and the CtC cyclone armor was most definatly recieving synergy bonuses with the amount of damage it took.
i orginally tried the same tests with stormclash's or windhammer's CtC nado, but it was way to spontainious to do any kinda controlled testing.
i believe people are getting it confused. skill bonuses from items cannot synergize actual skills, but hard points in skills will synergize skill bonuses from items
anyways, hope this is helpful.
good luck with the idea, its been mentioned a couple times but the discussion and interests in following through with it usually disapate.