When to add oak?

[LeBreton]

So I picked up a medium toast spiral oak stick at a local HBS on a whim. I was planning on starting a 5 gallon batch today anyways with the goal of a 7%-8% semi-dry naturally sparkling cider.

Now most folks seem to advocate adding oak to the secondary and remove after it has reached their preferred taste. Any reason why the oak can't be added during the primary fermentation?

 

[GinKings]

I don't see why you couldn't add it in primary, but you'll probably have to transfer it to secondary simply because primary is too short.