A few Valve index users have been having some difficulty with the "Tap" to grab mechanic, so we decided to add a new option in the menu. The new "Hybrid" grabbing system works as follows: If you quickly tap the grab button then it will behave the same way as the old Tap to grab mechanic. If instead you hold onto the grab button until the weapon reaches your hand (your controller will vibrate) then it will switch to "Hold" to grab. Once you release the grab the weapon will drop. We hope this is a nice middle ground as we didn't want to add a pure "Hold" to grab due to some corner cases. Please let us know if you have any issues / suggestions for this new grabbing mode.
This setting is available under settings --> game. Change Grabbing Mode to 'Hybrid'.
Thanks Avaruuskettu and Dwolfin for your feedback!