My PP CVG has a set...sadly he's not used them that often since he got them due to the crap weather but I expect good things when he does.
One reviewer on YouTube loved them to the point of almost putting the 5 iron in his bag..
More traditional lofts with similar tech to the HM and HMP should only lead to moon balls...
I’ve got JPX900 hot metal irons and love them. I’d say go to a mizuno fitter and get them to fit you to a set that suits your swing then decide you need HL model before you buy.
There is something nice about having a set of mizunos