Register CMDer as default terminal at startup

[RaXorX]

Is it possible to register cmder to be the default terminal at startup? It takes about ~30s after logon to take into effect. Made me curious if there was a way to register cmder to be default systemwide at startup instead of logon.

EDIT: Also, when registering CMDer to be the default terminal and injecting the comspec, I can get cmder to open by running cmd easily. But when it comes to batch scripts, it has a weird effect where it asks me to exit twice before it closes the cmder window. Any ideas how I can avoid that?