I've used both methods. Each has it's pluses and minuses. I like how all your pieces are ready to sew if they're all pre-cut. It takes additional time, but I like taking baby steps. Not everything needs to be done in one day! I like chain sewing too. I like knowing what length it's supposed to be. Mine are usually a little off, but look fine in the end. I guess I've talked myself into the preference (for me) of having all my strips pre-cut. No surprises of running out of fabric that way!