I used this method on the tumbling blocks pillow that I recently sewed by hand. It worked.
As for everything else - sometimes I do, sometimes I don't. As long as I am pleased with the outcome, that's all that matters. Crisp bits where the seams nest are so much easier to tame than fluffy bits where the seam can't decide where it wants to go AND I have to wrangle the seam allowance into submission. But that's just my opinion.