I too spent a weekend at Hamble on a selection board for BOAC, and was failed on my colour vision.
(I'm have anomolous trichromatism - which means I'm not classically colour blind with a missing colour sense, I see all 3 primary colours, but not in the same balance as "normal")
I therefore had to fork out my own money to get my PPL, which is restricted to day flying only.
At least you get to fly - I only got as far as ground crew, ah well, ç'est la vie.
I can't recall whether or not I went to Hamble for anything but I do recall that the physicals/medicals were at Biggin Hill (I think) - I know it was a RAF Aerodrome....as they called them in those days....yikes I am ancient...LOL!!
I think three would be better Ali.
Used with a flight sim, I think you'd get a pretty good immersion experience
(and the response time would probably be OK for that software CG, so go ahead and buy a few.)
I think it's to give you an illusion of 3D. Like in the movies - those of you who remember the introduction of Cinerama would know what I mean.
As games are designed for regular monitors, the articles on that monitor explain that there are visible lines showing between "screens" on that monitor. There isn't anything designed (yet) for that width so practically it's a waste of money, IMHO.
I went to Disneyland (or it could have been Universal Studios - same holiday) in 1980, and saw a 12 screen 360 degree film taken from a 12 camera array under a USAF bomber, flying over the scenic parts of the USA. You had to stand at the centre of the circle of screens, and handrails were provided to prevent the audience falling over as the plane went into a steep turn and the world surrounding suddenly tipped on edge.