Advantage of a pair of 14s is the fact that you have two. Basically equal the performance of binos and have the ability to split for another user if needed, mount one on a weapon or still have NV if a unit goes down. I believe that 85-90% of the work can be done with 14s and would have to think hard about the other 10%. Honestly I not sure that WP or binos give you anymore depth vs green. Its a individual eye thing honestly. The BIG plus to dual system is wearing NV for long hours and pistol shooting with a red dot. Also the ability to shoot your rifle passive on your RDS NV settings if your equipped.

The previous comment about building a NV gun I believe is just. There are things you will want like a higher RDS mount.

I ran bridged 14s for a long time and the only negative is weight and honestly if set up correctly with a really good bridge and counter weight its very manageable. I can do everything under NV that I can do in the daylight and that should be your training goal. The only time I change my focus from infinity is if I know I am going into house type structure where the rooms are to be short in depth as in 20 feet or less. Everything under NV has to become slower and much more purposeful. Remember NV brings stealth and stealth brings security.

Your comment about your eye under your 14 makes me think you have your gain adjusted too high. Try adjusting it down and that will help as well as give you much more depth and contrast with the shadows or dark areas. Having the gain turned all the way up doesn't help you see in the dark better. It actually causes more eye fatigue and makes it harder to look around or beyond your 14. If you can try pushing your unit out away from your eye as well, at least an inch. Many times guys get sucked into the tube and get stuck in it. Focus front, back and sharpen finally in the front one last time.

I am deep in the NV game. I dont know what you have in the way of your IR laser/illuminator but you might want to consider that before binos. The MAWL is game changing and should be on your list if not already on your rifle. IR illumination is very important if you want to take full advantage of your NV especially at distance for positive ID or actually want to see what your laser is pointed at.

The thought of having NV as an BIG edge if SHTF is somewhat slimming. Lots of guys as a result of the GWOT have the training and night hunting is the fastest growing segment in the hunting industry. Be able and equipped to work passive as well.