Been using Radio Shack submini switches on spring loaded Peco turnouts for a couple of decades. No issues and in theory they should work on Atlas. Throw is slightly long.

If the switch throw is a bit too long then
@Lemosteam solution on his was to form the throw-rod between the throwbar and switch slider into a simple Z-shaped spring. That will allow the electrical switch to be completely thrown in both directions, while reducing the strain on the turnout's throwbar. I thought that was a very neat solution.