Awesome! I'm so excited to see each update. Quick question. Have you tried swapping the hands in the project with "Hands for Vr SciFi" from the Marketplace? I tried using the Mechanized gloves, but the grip variable auto changes to "Byte to Enum GripEnum." Here's a link with screenshots.
I figured it out. We need to follow the Basic Hands for VR tutorial, and then add some extra logic that's in the documentation for the Sci Fi hands.
You need to make sure you are using the correct animBP. I have fixed this before with that asset. Basically since the Anim_BP that comes with Hands for VR SciFi has the same name as the epic one, if you point to the wrong one in your skeletal mesh properties then you get the issue you describe.
Glad you were able to figure this out.