Summoning with Skullhead: anything build-wise different?

So entering Fellshrine in Cruel first rare dropped this:


I had never looked at the stats but had been planning on a + to minions helm but this seems very nice. Just curious if anyone builds around it or if it just good for levelling with tankier minions. Missing ES and resists will probably be an issue later I guess so not sure if end game its good or not. I'm just doing a standard grab all the minion nodes plus reduced mana reserved build, most likely with life and AR and double-curse.

You can use Skullhead to snapshot it's stats on your minions when you summon them (or just the Spectres), then later on use a different helmet with better stats or keep on wearing Skullhead for it's hp and mana boost (if your resists are maxed and don't have an upgrade for it).