Show view from non-view/viewmodel in mvvmcross

What is the correct way to open a View in mvvmcross from a non-view? From within a viewmodel we would use ShowViewModel<>(..).

Specifically we are responding to a push notification opening the app (with a custom payload) which dictates a view that should be loaded.

We have a hackety workaround just for proof of concept, just wanted to get an idea of the correct MVX approach