Other than red seal being interprovincial, some placement agencies for plumbing trade actually request that you have a red seal certification or they won't even consider trying to place you anywhere. For those businesses, it's viewed as a prestige-thing rather than Alberta technically recognizing an Ontario journeyman license pre-red seal (before 2010?) I'm been licensed since 2007 but didn't have red seal until I requested to write it a couple of weeks ago and passed it. Basically the CofQ is both the journeyman and red seal all in one now.
Is Ontario Part 7 (plumbing code) itself obsolete officially, or is the entire Ontario Building Code (all parts) obsolete now? I have the entire 2012 OBC printed off myself (the PDF was free) but I noticed that the PDF for the National Plumbing Code doesn't include all the same charts that the printed one provided with the exam had (I.e. circular/non-circular rain water leader sizing, water service/distribution sizing based on different kPa pressure ranges, etc. It isn't cheap to purchase a printed national plumbing code from Orderline but I will probably have to get one now.
The 2012 code will be changed in 2025 based on the national plumbing code, I just purchased the 2020 national plumbing code from csa, I believe they are in North bay, cost me 50 bucks for the code book and 50 for shipping