I was kinda wondering the same thing. 11oz is about the weight of MM PV material, right? People wear kilts from that material all the time. And the guys who make kilts of MM materials say that it's pretty darn close to feeling and draping like wool. Right? And while I personally don't like that light of a material*, it seems to work.

*My experience was with a 4-yard PV casual kilt... maybe an 8-yard in this weight would seem heavier due to more overlap.