Thank you for getting the model! I'm working on a patch which should be ready in a day or two, which should fix the missing hand animations and some other minor errors.
Yes, the hand problem is because there are no hand animations present in the Gesture animation layer. I have only an index to test on, so I didn't catch it right away. You can fix this by adding your own hand animations, or combine the default animator controller in the VRC SDK for the default hand animations. Soon™️ there will be an update that will fix this.