[d0b]

I'm currently playing my first se iv gold game after it came in the mail after 6 loooooong days.
I was wondering if there is any disadvantage to sheild and armour skipping weapons like null-space and phased. I get that phased weapons cant penetrate phased shields but what's stopping you using null space as your main weaponry once you've researched it. And wouldn't that just make all armour and shields useless? Are anti-proton beams and meson bLasters used at all once this sort of technology is researched?