First impressions on Lensbaby Circular Fisheye

Lensbaby recently announced a new lens. A dedicated 5.8 mm fisheye optimized for APS-C sensors.
Lensbaby Circular Fisheye 5.8mm f/3.5 Lens for Canon Lensbaby Circular Fisheye 5.8mm f/3.5 Lens for Nikon Lensbaby Circular Fisheye 5.8mm f/3.5 Lens for Micro 4/3 Lensbaby Circular Fisheye 5.8mm f/3.5 Lens for Sony Alpha

Leaving behind (at least for now) the Lensbaby optic swap system, this is