cannot actually be worn by dnc, drk, or cor. and whoever put that in there obviously hasn't gotten it yet. or even bothered to look on ffxiclopedia (XD). and for the record the latent effect kicks in at tp>100% i use it on my blu for str gear macro . this + my other str gear gives me about +22 str before blu spell stats.
Received this from a locked treasure casket today on Zegham Hill in North Gustaberg. Dropped from a Maneating Hornet, and the combination was 34.
Edit: Looking again, I actually received a Rambler's "Cloak," not Rambler's Coat, but the stats are the same. Not sure how the latent works, but equipped as RDM/THF gives the STR+5.