Truth with Leap or a Kinect you could use any single handed controller as both track your hands & not the controller itself.
Not sure on Oculus as it might need the oculus camera &/or headset to pair.
Driver4vr is under $20 I beleive & it just calls home once a month for updates I beleive.
But probably won't need driver4vr with hand module.
Something the testers can maybe explore. @SweViver @mixedrealityTV @VoodooDE