HoS is also an absolute waste of stats on the set and the supposed playstyle. It doesn’t support cold. It’s extremely hard to plug weapon damage into Drain Essence, and the set actively converts away from vitality, while mutated DE converts from aether. And the skill bonuses to it are also bordering on non-existant. So AoC ultimately comes out on top, even if it’s also hard garbage.
I fundamentally disagree with the premise that interrupting DE to cast RoH “doesn’t intertwine”. I’m currently finishing my run on Clairvoyant Spellbinder. The core of the set is the support for AAR and 2 short CD nukes - Doom bolt for Warlock and Reap spirit for Spellbinder. To both the set even offers a chance of 100% CD reduction - so yes, there absolutely are channeling builds that interrupt the channel for the nuking. And it’s quite fun to soul punch the shit out of mobs from time to time. Surely RoH isn’t any more obtrusive that RS. And DE is even better suited to interruptions, as it sports way bigger DoT than AAR.
As for the whole idea of “using Chillwhisper on the wrong class”, I’d like to make an argument here.
Let’s look at the sets available to Reaper.
Chillwhisper, naturally. It’s clearly visible what the set offers to the class combo.
Morgoneth. A set that I absolutely love on Reaper, focused on SS. A set that is also widely run on Spellbreakers. There are also variants with it on Archons, Witch hunters and Ritualists. Seems like the set can be run on more than one class perfectly fine, even when drifting away from SS focus.
Deathguard. I have no clue about this set, I haven’t played it. Seems tailor-made for Reaper with its skill support. However, I see it also used on Dervish just skimming through the grimtools.
There may probably be more set-based builds for Reaper, but I’m going to stop at reaching 3. Because now we will look at sets available to Apostate.
Bonemonger. Set so omnipresent it absolutely dominates Apostate and Opressor builds. I’ve even seen it used on Paladins, and personally used it on gunsilnger Purifier at some point.
Radaggan. Widely run on Decievers as well, which I’m considering at the moment. So clearly there’s more than 1 class to play this set on. It’s also worth noting that Inquisitor offers absolutely 0 native support to vitality or acid. Way less than what Necro and Inquisitor offer for cold. Yet the set makes it work.
And that’s it. There’s no obvious third set to run on Apostate. Maybe there is something less obvious, but Chillwhisper is absolute garbage here. Unlike Ragaddan which brings the same class together for a rather unorthodox damage combo. Unlike Reaper, which enjoys 3 obvious sets supporting it, all fine and dandy.
So what else Chillwhisper supports? Infiltrator? Does it though? Does Infiltator benefit that much from amazing modifiers to RoH on the set, especially the energy cost reduction? Does it somehow benefit from amazing aether to cold conversion on chest? Maybe from the 2-set resist bonus? No, it doesn’t. For Infiltrator it’s almost purely a Blade spirit set.
So, the bottomline, is that Chillwhisper is just a shit set for a shit class. It has absolute junk for stats - you can just remove several lines from it tomorrow, and nobody who plays it will even notice. Unlike sets like Morgoneth or Bonemonger, it barely supports one class, and for Apostate it’s WAAAAAY worse than Radaggan, which deals with equally problematic damage combo way better.
And, honestly, I half-hoped that somebody more competent than me would come up in this topic and give their perspective on actually playing the set on Apostate. Guess nobody plays it after all. Maybe I should just cheat it up to 100 to see if it’s as miserable as it looks on practice.