I think it should be clear that when some people refer to no FPS, they don't necessarily mean there won't be combat in a first person view. You wouldn't call Fallout 4 an FPS, for example, despite having a first person perspective and shooting from it.
Most people, when they say FPS, are thinking of Call of Duty type shooters, with dozens of different weapon choices, grenades, rapid respawns, and so on.
I'd argue that it will be first person perspective, but the shooting will be more akin to the SRV. Simple, basic, and intended for use other than just shooting up other SRVs.
My guess? A multipurpose pistol that can also be used for other purposes (ie taking samples like the SRV), plus a wrist-based computer for other kinds of interaction (ie hacking).
Don't expect laser rifles and rocket launchers and grenades and all that, or objective hold points, or battle royale....