Do you get partial bonuses from emberflow tomes while working on them like the CoP or do they not take effect at all until completed?
Edit- I ask because I just completed Treatise on Armor Optimization, which should have given me +8 damage reduction since I have +21 on my gear. However, before I completed the tome I let Lottery Master Abigail beat on me for a while and her average punch (with a sample size of ~1000 hits) was 195. And then when I completed the tome, I did it again with identical buffs and gear and her average punch was... 195.
Since there's no way to disable a tome once you've completed it, my ability to parse this further is pretty minimal. I had a long parse from a couple weeks ago clearing Zaranth dwarves in CC for a few hours, I just went back for another couple hours and parsed and the results are rather inconclusive (comparing the average hits of dracoknights, shadowstalkers, rebels and soldiers I don't see a solid trend of 8 lower average damage). I just want to be sure that this tome actually works, if someone could confirm it that would be great.