I put it on the trainer tonight. Roughly the same width and overall look off the butterfly, little bit slimmer overall and the cutout is a bit further back and wider.

On the trainer the soft areas don't feel much pressure at all! My sit bones feel more though. Could be that there seems to be a bit less padding in the back. I'll see tomorrow if my bones accept it on the road or not. I might have to dial it in a bit, but it seems promising!

The neat/weird/scary thing is the rails!! They are a combo carbon/steel alloy thing and they look like they will break easily. The whole saddle flexes under the weight (the rails bend under hand pressure). I'm hoping that this will give a smoother ride and won't leave me biking home standing up!!