Here’s what other left-handed users have said:
“I’m left-handed. Have had no problems accidentally erasing anything. I do use the planner sideways because of the ring-binding, but this is very easy.”
“I rub out much less than I would with a pen. Practically nothing. Though, to be fair, sweaty hands do smudge the text a little bit – that’s why I say ‘much less’ and not ‘nothing’. The rings don’t bother me at all.”
“I’m left-handed and I don’t rub out anything. Just keep my book straight.”
“I’m on the left. Works great for me. No rubbing.”
“I’m left-handed but I didn’t experience any problems. The ink dries quickly!”
“I turn my pages a little bit. I’m left-handed and can write without rubbing out my own text thanks to this trick.”
“I am left handed and it works. If I write an entire page at once it smudges a little but you almost never do this in an agenda or notebook anyway.”