PIE Multiplayer simulating one Client as mobile

I’m trying to prototype a multiplayer demo between a PC running Windows with an HTC Vive and a mobile device (will be Android and/or iOS). The idea being that the PC will be a listen server + client while the mobile device will be a client that connects to the PC session.

The issue I’m having is with testing this within the editor. I want to test in editor because deploying to the actual mobile device and the PC every time I make a change is not viable from an iteration point of view (would take minutes).

My idea so far is that on startup, the gameinstance will determine if the game is running on the pc or on mobile and depending on that will load a different pawn (a vr pawn vs mobile pawn), different main menu level, etc.

Since I am trying to test with PIE (2 player settings under the play menu) however, I need a way to arbitrarily tell one of the two gameinstances that it is mobile. For example, if somehow I could set a bool in one of the gameinstance instances (no pun intended) that would be good enough.

Is this possible at all? I haven’t succeeded so far in doing so.
Otherwise I might have to temporarily add some button, for debugging reasons, on the first level that switches between telling the gameinstance that it is pc or mobile.

Alternatively, could anyone suggest a different approach?