Hi! I have some things to point out. I handle a lot of small screws and components and I often use my xG3 v1 in P0 to hold them. While it is quite convenient it isn’t 100% reliable. In a medical environment, with latex gloves, where it is very important not to drop anything I don’t know if I would trust it. That said the xG3 v2 should solve that issue.
Second thing about picking them up with the finger tip from a small container, you would need your finger implant (Titan) to be on the very tip to do that. If you where to place it on the side of the finger tip (usually more convenient and a bit safer) then it wouldn’t work exactly as you expected it. You have to place the side of your finger on the part and it can be a bit awkward. That said I have fished a LOT of screws out of computer cases this way, you just need to get it in the right spot.
Finally consider that a screw held on a magnet will remain a bit magnetized, it can, in some contexts be an issue.
If I was in your case I would have an xg3 v2 in the left P0 for small part storage and , if you can afford it, a Titan in the right index finger on the left side of the finger tip but as close to the tip as possible for manipulation. Assuming you are right handed. The logic being you pick up with the right index to and from the left hand storage using the right middle finger to pinch screws off of the xG3 and against the index with the Titan.
If you only get the xG3 then I would go with right P0. This way your right hand does the screwing/work and the left one can pick up and place screws from the xG3 at the same time. This is what I usually do.
Yes I have thought a lot about this 