I'm actually reading through HY histo right now, and I think it's great!
I know most people say histo is low yield, and it's enough just reading FA and doing some questions, but since I've never sat for step 1 before, I guess I think this is important as well.
The good thing about HY histo is that it integrates alot of stuff/concepts... they have included important drugs for most chapters, as well as clinical considerations that briefly presents the associated pathology...
I know most people only study for 5-6 weeks, so adding another review book isn't their best option, but from my POV, this is a good subject to devote some time to, since the pathology is easier understood later on...
Just my humble opinion🙂