The model you linked to has a maximum video (output) resolution of 1080p. For a panoramic, that's a very low resolution (most competitors are 8, 9, 12, or higher).
Because of that structural deficiency, we never looked at it anymore. DW is planning / hopefully about to release a 48MP multi-imager, which we are interested in testing.
Both the dome version and the funny looking one appear to use three 2.1 Megapixel 1080p image sensors. Could be worse.
Full Disclosure - I work for Digital Watchdog
Agreed - we are planning to release our 48MP/15FPS camera at ISC West 2016. This camera is also capable of 32MP/30 or 25 FPS as well. We will be having a webinar this Friday on this camera as well.
The 1080p panoramic cameras have been a great solution for some applications, but these applications are different to what it's being compared to here. The best way to think of these cameras are that they are similar to PTZ more than other mfg panoramics.
The PTZ control and presets in DW Spectrum work with these cameras as well. Best part is there are no moving parts.
The dome and the bullet(also known as Thor's hammer) stream a stitched 1080p image from the 3 sensors at up to 30 FPS. The stream is standard ONVIF Profile S so other VMS solution should not have an issue, we do not in DW Spectrum. The Hammer also has integrated IR for low light.
Please feel free to reach out to me if you would like to try one.