I've been wearing this for 2 seasons now, and while I will be retiring it after this month, it has been great to me!
I use the Fornix without the earpiece's, which unfortunately means that I cant use the twisting dial that either tightens or loosens the inner liner, as it is connected to the earpieces. Bummer, but it still offers a great fit for me.
I have used this helmet with many different goggles, but mostly the Smith I/OS, which creates a great fit and does not leave you with a dreaded "Gaper Gap". It also seems to work well with Oakley Splice's.
I've put this thing through the wringer (and plenty of trees) and my brain is still in my head so, there ya go!