Thanks for the reply, I see I made a mistake in binding for both vive and index. I'll have to do some testing and upload a new build in a day or so.
In the meantime if you want to play launch the game and bring up the steam overlay, then go to Settings -> Controllers -> Manage Controller Bindings. Select Hard Vacuum from the dropdown then set the Active Controller Binding to Custom. Click Edit This Binding then click the controls tab on the far right. Click on Edit Action Poses then for left hand raw change the setting to pose.
After doing this the hands should track correctly. The positions may be off as they were set up for rift but you can correct them manually when in game from the pause menu by following options -> vr options -> position adjustment -> hand positions