If you are using borates, then you are probably safe from pH fluctuations, but you didn't mention this in your posts above. And if your SWG is continuously producing chlorine then you are probably fine. But you mentioned above that you are also adding 3 gallons of LC from time to time - without borates, that would push your pH nearly to 9. So, having borates or not is a very important information in this discussion.
And I wanted to highlight that having no carbonate buffer in the pool is not TFP standard, and readers should be aware of that. There are consequences that they need to be aware of, and that general TFP guidelines don't necessarily apply anymore (e.g. "lower pH to 7.2 before SLAMming and you don't have to worry about pH during the SLAM" - in this case, borates are very important, but they are also not the standard TFP-way, they are more of an advanced add-on).
This is a very interesting discussion, don't get me wrong. But I think it should probably better happen in the deep end, as it is certainly beyond standard TFP guidelines. Readers copying this approach need to be aware of and understand the consequences. Just a few parameters different to yours, and things can go terribly wrong - e.g. plaster pool, metals in the water, no borates, etc.