Maybe it's been awhile since I've played a VR game with hand presence but isn't that how most games handle the touch controllers?
Nah, not all VR games. Some VR games do things differently, or interact with things differently.
Like for example, there is a part of the Boneworks tutorial where you have to climb a wall. You can climb the wall in seemingly two ways, but one way doesn't make much sense.
The Trigger button lets you grab onto the wall, but the hand makes like a pinching gesture. That doesn't make much sense, so that's where the Grip Button comes in. You can also use the Grip Button to grab onto the wall, but when you press and hold both the Trigger/Grip buttons together, it makes sense.
I don't know if I explained it clearly, but hopefully you get what I'm trying to say. :o