It's true it's harder to find correlations, but this particular correlation is not likely to be meaningful. As far as reading the distribution, two separate hi

It's true it's harder to find correlations, but this particular correlation is not likely to be meaningful. As far as reading the distribution, two separate histograms are definitely more readable and understandable in order to understand the distribution. Adding the complexity of a scatter plot because it also shows a correlation that people are not actually interested in makes things less understandable.