Assuming one has acquired the strength necessary for one arm chin ups, could other weighted pulling exercises be dropped in favour of it? The idea that all you need to improve or even maintain massive pulling strength is a few sets of one arm chins per week is very appealing to me. Plus it's a cool as shit party trick.
Sure, if you ever manage to get into a decent rep range on one arm chins. I guess then you realistically drop other pulls (maybe minus deadlift).
Personally I'd just keep doing normal weighted chins and leave the one arm variety for parties. As it stands I can only do one or two tho