I've finished a journey of C&J with 24s through the Giant. Prior to this I had participated in the Maximorum Beta test with a pair of 28s and had intended to use them for Giant C&Js but my form wasn't great, so I went back to the 24s.
I started on 3.0 to practice at low reps, then moved on to 2.0 then 1.0,1.1 and 1.2.
My total volume per session ranged between mid 30s to mid 60s depending on the reps. As an example in 1.2 week 3 I managed 63 on day 1 (7 reps) and 54 on day 2 (9 reps).
I didn't take any measurements , but at the end after completing 1.2 I definitely have more size across upper back and chest, arms look bigger, mid section is rock solid and I put more size all over my legs. The biggest plus has been how powerful and flexible I feel. I'm 47 and play cricket (loosely like baseball) in the UK summer. My reactions to the ball are quicker and more powerful than previous seasons , I would say more so than when i have been training other programmes such as S&S, ROP, Strong, Giant C&P etc.
I tested my press and also my max C&J rep tonight and was pleasantly surprised. I managed 16 good form reps of c&j , I could have pushed through a couple more if needed and was able to press the 32kg twice on my left (struggled to get 1 rep in the past) and 3 reps on my right (previously 1 single).
My sessions were mostly just the Giant , with OS and Mace 360s to warm up and the occasional low volume bent press.
I'm going to continue my journey with the C&J , next up is Giant with 28s, then hopefully RMF, which will lead into my next cricket season where I may try Giant with 32s or go A&A style for the summer, I'll see where I end up
Sorry for the long post, but it's been a great experience.