Just got the Caudabe Sheath in Navy today. It's a nice, understated case which feels solid and secure in the hand. Cutouts for lightning port, speakers and mute switch are precise. Covers for the power and volume buttons are firm and tactile.
The case is a good thickness - not bulky and not too thin with absolutely no flex when installed. The area around the lightning port is reinforced with a little extra thickness. The texture is a very fine matte, grain material which makes it comfortable to grip but doesn't affect the ability to slide in/out of pockets. The carbon fibre accent beside the camera is glossy and smooth and offers a nice pop of style on an otherwise plain case. Branding on the side and at the bottom of the rear is small and discrete.
There is a raised lip around the front to protect the screen. This does not impede performing gestures, but does feel a little bit sharp when moving a finger across as there is a seam here. There was a slight touch of wear along the top edge straight out of the box, so I suspect this may be the first part to suffer from wear and tear.
The camera is protected with a fractionally higher lip than elsewhere - this is so minimal it won't result in rocking when laid flat but still means the lens will not come into contact with the surface.
Some of my close-up pics looks purple, but I can assure you the blue on the full case shots are truer to colour. In low light, it actually looks black!
I've also got a red one on the way which should arrive next week.
This is my second Caudabe case (first being a Lucid Clear) and I'm very happy with it. I think I'll be going back for a Synthesis soon!