Centrifuge and absorbance ratio

Ethanol precipitation with Ray's centrifuge today. I reckon Ray's protocols are somewhat strange than normal ones. Yesterday I also had a feeling he might not check nucleotide purity (absorbance ratio test) after DNA extraction. ...and I'm right - they don't. "That's textbook!" said Ray. ...I can see what he means, but at the same time I still feel odd without doing QC...