It is a great watch. They have been discontinued, but don't be fooled that they'll be a good investment opportunity, they won't be. You should buy it because you like the watch, not beac use it will hold it's value.
The 2254 is often thought of as being Omega's tool watch, whereas the 2253 is more popular because of its link with Bond. Both are beautiful, and they are among the most comfortable watches to wear, they are so well balanced!
If you don't buy it, let me know how much he wants for it, I might be interested