Forum observation:
New poster: Here's a program I would like to do, any problems with it?
forum regular: What are your goals?
New poster: <shares goals>
forum regular: Why are those your goals? Your goal should be 100 32kg swings in 5 minutes and 10 32kg TGUs in 10. Hmmm. For that I think you should replace your plan with S&S.
I VERY much agree with the S&S first SF progression, but when I step back, I think it gets taken to an extreme. People got strong and healthy before S&S. People all over are getting strong and healthy without ever touching a kettlebell. Dan John, who coauthored with Mike Brown the article that is often referenced (and has become my own personal roadmap), no longer even trains clients with loaded getups the last I heard. He just wants to maintain movement competency with a half filled (half empty?) cup of water in the TGU. If your goal is mass, and you really want to barbell squat, work on technique then back squat!
I was a kettlebell purist after finding Pavel's writings. After running into a wall with S&S, I finally ended up with convenient access to a gym and started barbell training using Pavel's presentation of Faleev 5x5. I LOVED it! Very recognizable and immediate progress. Perhaps strangely, I never got tweaks or setbacks with barbell training, but with kettlebells I would find the slightest deviations in technique could tweak something and require a week or 2 layoff. Now I'm finally rearing to get back at S&S and the royal road through ROP, but I've learned to embrace the wide world of physical culture, and keep a journal along the way. The best programs for your own body will be found through experience. The only thing better than a tried and true program for the masses (like S&S) is a tried and true program that's been tailored to yourself.
Also, S&S feels so much better and easier after building some base strength with the barbell (granted I had also built base capacity with two years of kettebells), and I think I will cycle back into some barbell before I finish S&S.