Well, maybe test it just a little longer, because it got way too annoying for me to work at it more. I did two tests types (6 of each).
First I put the bandaid in a location as if the cut was close to the worst possible place - so the bandaid would completely prevent any skin on the finger from touching the key when typing (right index finger). That screws thing up as a result, but also because the edges of the bandaid tends to stick out a bit - with the forward edge being loose. That is, not held firmly against the finger like the main part of the bandaid would be. As you'll see, I was pretty bad. I imagine if I tracked the errors like I used to do, I could improve significantly. But, for now, I'd say I tended to keep getting keys above what I was aiming for. Below is the adjust wpm and the number of errors for one minute tests. Obviously, the 2nd one was luck! But still a big drop from my norm. BTW, this test counts errors a bit differently. As near as I can tell, if you mistype three letters, but all in the same word, it only couns it as one error. Other tests would count it as 3. So the number of missed characters is higher than the number of errors, which are just how many words had errors, not how many characters:
42 8 errors
56 1 error
48 13 errors
40 12 errors
37 8 errors
38 12 errors
Then I did another set of tests, moving the bandaid further away from the very tip of the finger. This meant typing let some skin hit the key, which helped. As I tested, I found I could do even better if I curved the index finger more so I was mostly hitting the tip of my finger and, hopefully, none of the bandaid. I didn't feel things were typing automatically. Felt more like a chore. But I did much better:
54 6 errors
54 1 error
60 2 errors
61 3 errors
63 1 error
68 0 errors
From this testing, I'd say the less bandaid you need, the further from the tip of the finger it is, if you can, use a narrower bandaid to minimize any excessive part of it sticking out, etc, the better you'll do. Certain should improve if you have to keep the bandaid on for days rather than a short time with less chance to adjust.
If anyone has tiny, round bandaids (like dots), and very sheer too, it would be interesting to see how they worked if on the tip yet not sticking out extra. You'd have no skin contact, but nothing extra sticking out and maybe, if they were very sheer, it wouldn't hurt the feel as much as a thicker pad.
I read some time ago that there was some kind of bandaid that didn't even use a pad. There was just the sticky area that would go directly over the wound. Never seen them, but if they exist, they may work the best.
Going back to normal typing without a bandaid still felt odd for a little while, but I'm okay now.