Felt compelled to write this review after seeing a couple negative comments on here. I've been running this bot non stop without issue on my ironman with minimal gear (torso, zombie axe, dragon dagger, nezzy helm, veracs skirt).
Blood moon WILL slap you if you don't have at least base 80s and chivalry on quick prayer, as well as some higher defense gear such as barrows.
I have had zero issues with this, and it has just completed my first set after around 300 kills.
Thralls are on my todo list and have been for a while; They're just slightly complicated and my current account doesn't have thralls unlocked. But I'll try to bump them up on my list.
Re: Spec, it'll currently use your regular offhand while spec-ing if your spec and regular weapons are both 1 handed. I suppose what you're describing could be desirable if using a 1 handed spec (say DDS) but a 2 handed weapon (like a scythe) but honestly I think this is pretty uncommon? I'm just hesitant to add too much more bloat to the UI for a very niche & minor DPS increase in spec.