You will have less issues in marginal snow with fully clipped, no rubber running on the hyfax. Yamaha switched the Vector from every 3rd to full clipped for 2010, I believe for this reason.
There is a slight weight penalty for fully clipped, more metal.
Replacing the clips will take 3 times as long if you ever have to do it......
I would go with fully clipped, if you ever want to run extrovert drivers it's mandatory.