I have heard of people using Ballistol but I have no personal experience with it. Some of the folks on BF prefer it.
I usually stick to Break-Free (which any gun shop or cop shop should have) or Tuff-Glide. I have used Militec and it does a fine job, I just prefer Tuff-Glide for it's drier properties (holds less gunk in the moving areas of a knife).
3-in-1 oil would work fine until your Militec arrives and that should be easy enough to find.
"If there are no dogs in Heaven, then when I die I want to go where they went."
~ Will Rogers, 1879-1935