Got my 10th Amnesia to finally reforge my Wakizashi. I think this is about the date when I started waiting:
QUOTE(Logii @ Dec 14 2015, 01:25)

That's good to know, though now I have to train some Ability Boost (IMG:[
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So far my DW experiment is going ok, after a careful start I went with IWBTH for Arenas and PFUDOR for REs. Started grinding proficiency today, now at ~88, hopefully I can go full PFUDOR when it catches up.
Got no additional Overpower for my Wakizashi, which is not ideal, but I'll have to deal with it for now. The parries are poison for Overcharge, I can imagine it becoming a nuisance with the 10% monster parry bonus on PFUDOR. If only DW (and 2H) had an additional Overcharge bonus like 1H has from Counter-Attacks...
That is over 1.5 months of almost daily grinding to get 10 Amnesias, and I think I even had couple Amnesias to start with. I'm considering suggesting Tenboro to buff the Amnesia drop rate, but maybe I was just unlucky. They seem to be about as common as Legendary drops for me, way less common than Artifacts but more common than Figurines. Now probably I need bunch more Amnesias because I'm sure Overpower 5 won't be the first thing to get in IW. Also I need to find motivation to do the IW from the beginning.
Just as a side note, there is definitely reason for me to switch to DW again. My 1H+light armor set is very inefficient in every possible way. Surprisingly I have even gotten weaker as I level up even though my equipment is soulbound, the monsters simply get buffed up faster. I can see this because I have to cure more than before even in regular arenas. I would say 1H+light armor works pretty well up to level ~320, but after that the attack damage is simply not high enough compared to Power armor.