Mixed feelings but I get why people like them.
What is it?
For those who don't know it's a Unicomp Model M but with a joystick mouse. Unicomp bought the rights and tools for the IBM Model M.
My daily driver is a Ducky Cherry MX Blue. Compared to that the Unicomp keys are stiffer and less tactile. Unicomp uses a buckling spring which in theory should give you increased resistance until the spring buckles resulting in a sudden drop and registering the key stroke. In reality I found the buckle happened right at the bottom of the stroke. This removes any physical feedback as when the spring buckles there is no where for the key to fall. With the exception of the noise it may as well have been a lineal switch. In addition its actually a membrane keyboard. So the key only registers when you bottom out. Not the worst design ever, except the membrane it's self requires extra force. So the experience is pushing quite hard until you hit the bottom where the travel stops then the spring pings then assuming you have enough pressure the key will register. I'm naturally a heavy typer to the point where people sitting next to me complain and I was regularly having keystrokes where the spring buckled but were not hard enough to register.
It's physically quite heavy, keyscaps are traditional but nice. Mouse buttons are ludicrously stiff. Joystick is exactly what you would expect. The chassis flexes a little and makes noises. LEDs are blue and very very bright. I did have an issue with larger keys particularly the right shift getting stuck.
N-Key Role over:
Unicomp uses 2-Key role over. A lot of people get confused by this. It means when you press 2 keys at once they are guaranteed to resister however other combination of 3 or 4 may work. I'm a developer and use lots of 3 sometimes 4 key combinations and can happily report everything I tried worked.
The Keyboard Company:
I ended up returning my Unicomp and can say The Keyboard Company was nothing but amazing. Polite, knowledgeable, efficient. Honestly can't praise them enough to the point where if I found the same product cheaper somewhere else, I would happily pay the extra and give the business to these guys. Good service is worth paying for and if something goes wrong you will appreciate it.