(edited by The Great Dog Of The North.4786)
Signets passive affect question.
“Allies” includes you, so I would say yes. Unless the description says “other allies”, in which case it would mean it doesn’t heal you.
And I don’t think any healing occurs in DS outside of one GM trait…
No signet passives dont work in DS. Signet passives only work if you have the signetbuff on you.
For the healing question. Yes when it says allies it normally means up to 5 allies including yourself. However healing is restricted in DS.
Currently the healing that works in DS (atleast to my knowledge) are the active lifesiphon from signet of vamprism (but strangely not the blood bond trait, which is most likely a bug), unholy sanctuary, the siphon traits in bloodmagic (minus blood bond) and for the reaper elite spec the blighters boon trait.