I am right-handed. My right thumb, with which I normally hit the space bar, has become a little sore, so I am experimenting with switching this task to my left hand, with interesting results. My left hand, and particularly my thumb, is having no problem. But my right hand!
Oh, it just doesn't seem to know what to do with itself!
The thumb, of course, tends to hover, and drift towards the space bar. The unexpected thing is that my right hand loses its place after the space bar's been hit by my left thumb, esp. if the next letter is a right-hand letter!
I often have to stop, look, and re-place my right hand on its home keys.
If anyone else would care to try this switch, I'd love to know if you found the same thing.