So i got every crafting class to 16

[RiceisNice]

Imho, leatherworker is not as important to get to 50. I find myself using WNII very little, if at all when you have the CP available for GSM's manipulation. Combined with ALC's TotT, its a lot more flexible than WNII with good procs.

[tocsin]

WN and WNII are both much more useful inside of macros than in manual rotations. when macroing, tot usage is kind of ignored, so there are less spots for "Wasted" hits. A macro combo of:
SH2
WN2
hasty
hasty
hasty
hasty
SH2
hasty
hasty
hasty

wastes almost nothing, and the "round up" of a 5 dur means that it truly wastes nothing, as long as you never get back up to full durability.

That said, the moment you use a ToT move during WN2, it is more expensive than any of the other choices.

This comes from someone that spends a lot of time semi afk while crafting cheap mats, Watching Netflix and pressing a macro button monotonously.