>>310241535
the only problem i see with going controllerless is that some interaction with the system requires a controller.
for example: the steamvr menu will sometimes pop up after it starts, and there isn't any real way to clear it without a controller except for a kind of obtuse developer menu in the steamvr status pane that lets you bind keyboard keys to vr commands -- but that only works as long as it's open.

for what it's worth wmr lets you use a mouse and keyboard to fully interact with it, but that functionality does not extend to steam.