They look pretty good post-soak. He PM'd me about my experiences with my pair and he said the waist was already tight so it was I who suggested he wear them during the soak. I've had good experiences with that method on jeans that were very tight in the waist at the beginning; it helped me avoid having to wear them around half-buttoned for weeks until they stretched.

Jskiddz, how many STF jeans do you own? It's been my experience so far that 20-40 minutes of very hot water is enough to bring the denim to an equilibrium point whereby any additional shrinkage from subsequent washes would quickly stretch back to the post-initial-soak sizing. This is based on my experiences with probably close to two-dozen pairs from various companies and of various denim types...
The only exception to this was my sugarcane SC40400N which I think is an outlier because those jeans aren't even made of cotton...