Greg addressed the topic a bit on Robb's podcast here is a link with some of the highlights and the link to the podcast:
In comparison to most equipment purchases Oly shoes are on the low end of the price spectrum. I still have the pair of Do-wins I bought years ago. Nowadays I wear them for heavy squatting days but I used to wear them all the time when following the CA WOD's.
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."