Final Fantasy XIV Database - Ffxivpro.com

I'm not passing judgment especially since I'm not too clear on the circumstance or the handicap in comparison to light based sleeps such as Lullaby, Light Shot and Repose.

However, if I'm not mistaken, it would seem the inhibited effect of sleep applies only to specific instances/battles/mobs. I'm sure if it really is an issue it'll be cleared up within the week, otherwise we'll just simply have to adjust ourselves to it.