Definitely yes. Maybe it is because manual writing requires to be more conscious about joining the letters (google any images from request "russian cursive makes me cry sometimes" to see my point).

Another hypothesis of mine is that some non-qwerty layouts having all the most frequent symbols on the home row makes me do some typos that are indistinguishable from real words which may be visible for me maybe on tenth re-reading of my text.

Nope. My brain is usually words ahead and my hand can't keep up and I get impatient and I make mistake after mistake when manual writing. Things I never do on my computer. The only time I type poorly is if, obviously, my hands become misaligned to the keyboard.