Okay, I've used the Dot View knockoff for a few days. Seems okay, but I think I'll go back to my Mofi case. Here are my thoughts on the two.
Function - The Dot View case provides Dot View, duh. But it's pretty much a parlor trick with limited utility in my daily use. Maybe there will be more functions either from HTC or independent developers in the future, but right now, I think it's a neat trick but just doesn't greatly improve my utility. The magnet does automagically tunn on/off the screen, which is handy. The Mofi obviously doesn't support Dot View and doesn't have a magnet for screen toggling. All main ports are available with either case on, but the Mofi can muffle the front speakers with the Dot View doesn't as much. The Mofi flips out to landscape, great for watching videos, while the Dot View doesn't.
Camera - Both cases have proper cutouts for the camera and flash. However, the Mofi case is a little thicker and the cutout for the flash causes some unwanted reflection of the flash onto the lens, causing a flare on the photo. If you don't use the flash, this is a non-issue. However, it's an issue if you plan to use the flash.
Protection - The Dot View provides decent protection, but the Mofi is much more substantial for about the same footprint. The front cover of the Mofi seems like it's metal or something equally rigid, and provides great screen protection.
Material of construction - The Dot View is a somewhat tacky rubber ("tacky" as in it doesn't slip). The Mofi is a black leather ("pleather"?) and just feels higher quality. Plus the leather makes it easier to slip into your pocket. The rubber of the Dot View doesn't want to slide anywhere.
Cost - they both cost about the same, cheap, so I like having both. However, I'll probably use the Mofi on a regular basis.
http://www.amazon.com/gp/product/B00RYWHIH0/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Amazon.com: HTC Desire Eye leather case (Black) Anoke@ Stand Slim Flip PU Leather Cover Soft Back Case Shell Compatible for HTC Desire Eye (Mofi Black): Cell Phones & Accessories