windows 10, maybe it is limited to the wireless receiver? or maybe only the xbox controller?

I do think the same thing can be done when spawning in a blueprint in astronaut mode.

Xbox 360 wireless controller, Spinning slightly to the left after multiple analog inputs from different axis simultaneously.

Some players want to use the controllers axes and analog controls for things like speed, aiming, strafing, and rotation,(it just feels so good) Being unable to swap weapons using buttons is a issue for players who want to the controllers analog input to accomplish those tasks.