@lummers it's great to talk to people that are interested in what I'm doing!
Honestly, this is a question/confusion most people have even myself. when you say that 32" is your actual measurement does that mean you took a measuring tape and measured the circumference of your waist? OR does it mean you laid your jeans flat and measured across the waistband from end to end on got 16" and doubled that measurement to get 32".
When I talk about actual measurements I take a measuring tape and wrap it around where I usually wear my jeans. For me, that measurement is a 34.5" that is the finished measurement of RTs tag size 31 taking the measuring tape and measuring from keyhole to button. It's very VERY rare that you find a jean thats tag size correlates directly with the actual circumference of the waistband from key hole to button. I guess you can call that "vanity sizing" Maybe some Japanese repro brands and Levis 501s are the exception.
anyway my goal is create a page on my site that is dedicated to showing people how I come to my measurements so I can try to address some of these questions.
Honestly, if you usually buy tagged size 31 in most brands then you should get a 31 in RGt.
Hope this helps...please let me know if there's any confusion.