The N950 which features a QWERTY is a developer device and not aimed at the consumer market. It will come without a warranty and run beta software. It is not recommended as your day to day device.
The N950 has some features which of course would draw eyes away from it's sibling. It's 4" display, slide-out QWERTY keyboard and aluminum body are some of them. The camera does not carry the 'Carl Zeiss' branding like the N9 but has the same quality.The N950 wont receive Over-the-Air updates and will require manual flashing.
With Meego's flexibility it wont be surprising that the devices will be quite popular. We are not sure if the platform will get much App support, considering that their are only two devices. But two are always better than one...