Heads up VTubers. Ultraleap (makers of LeapMotion and StereoIR 170) are basically dead, Their IP got sold to patent trolls, their tech to a musical instrument manufacturer and half their staff have already been laid off.
Since there isn't really any viable alternative for VTuber hand tracking, if you were planning to buy one of these you probably should do so soon.
If you already have one, you should keep local copies of your preferred driver versions, and take steps to protect your USB port (especially if using chest mount)