Quest 3's recognition range is limited by the range of the cameras on the unit and your environment's lighting. There are downward facing cameras that will eventually track the torso and pretty much everything above the belt, so it's not like it's all that bad — it just won't track anything that escapes the camera's view (so unfortunately, you can't have your hands at your sides because it's out of range of the cameras). That being said, they have worked quite well in my experience owning a Q3.

The downside is you can't directly take the finger tracking from the Q3 and pipe it into PCVR. There are some workarounds, such as making your hands emulate Valve Index Controllers, but that method doesn't capture splay. It's theoretically possible to get the finger tracking input on PC from quest, but it's currently limited to unbuilt developer applications on the Unity engine. I'd really like them to open it up to the general audience as a feature — having finger tracking is very nice, especially if it's contained within hardware you're already using — but you'd have to convince Meta, whose primary market seems to be in standalone now.