I merited 5/5 Ninja Tool Expertise on NIN for the lulz (and cause it's one of the cat2 merits that doesn't suck so bad on NIN). I got my hands on a Koga tekko and wanted to see if the hands (33% proc rate on saving a tool) stacked with my 5/5 Expertise merits (25% proc rate).
After 100 casts of Utsusemi, I was pretty dismayed to see that I only saved 35 shihei, which is more inline with the 33% proc rate of the AF2 hands. So I'm thinking that the higher of the two will only process, and that they won't stack. So if you have the AF2 hands, the Expertise merits don't kick in; and if you don't have the hands, your merits will kick in.
Kinda sucks. Is this a bug? Or were they never meant to stack in the first place?
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