Ok none of the leading brands NGK Bosch recommend putting anti-seize or oil on the plugs so why would you even when they give you reasons why not too......My thoughts are how can you be sure that the wash, seal, gasket, will be substantial amount contact all you need is a bit of gunk on the face where the gasket will sit for it not to conduct. The thread is there to do 2 jobs conduct and hold in place.
Also you know that loctite silver anti-seize is made for aluminium not the nickel. Your better off using graphite 50 anti-seize from loctite.
But your choice.......
http://www.loctite.com.au/lubrication-anti-seize-4096.htm