Opinions/Experiences on Clomid-Only PCT?

Just wondering what people’s personal experiences are with running Clomid only alongside an AI taper? Nolva only? I know you’re going to have vastly different experiences depending on cycles. I’m talking about more for a low/moderate or Test only cycle, not heavy cycles.

Also, I see so much online about PCT being 100 percent necessary all the time. Why on earth is the same sentiment not shared about HCG throughout the cycle, up until PCT? It just seems like it should be standard protocol for any cycle, no?