This winter closure of Mt Skene has been in for some time but has never been enforced. As far as tourism is concerned the pubs & shops rely on the huge number of people travelling up there so the local authorities turn a blind eye. As it's a main 2WD route that is never cleared of snow, councils are obliged to close it for public safety as the liability should someone be caught up there would be huge if they weren't warned.
If you're unsure whether to go or not just drive up via Lazzarini's spur as there is no warning sign going in that way.
Really all you have to say if challenged is you " have spoken to Glen Patton at Heyfield police station, he said the Licola-Jamison rd is not officially closed". What more do you need to do?
As far as a track closure list from DSE & Parks you can find it here.
http://www.fwdvictoria.org.au/upload...WDV%202009.pdf Most of the tracks of intrest are in the Mansfield State Forrest.