[quote=ImportantNobody]
I did have an idea for dragon scale armor, but would that be like a human wearing armor made out of human? O_o
[/quote]

I guess, since if it's High-tier human skin armor, it can automatically resist nuclear detonations. 

That would be very strange.

[quote=Vordak]
Hah, maces! Fibre armor and non-newtonian fluids come to save the day! :D
[/quote]

Bullets crush flesh and bone rather than cut it, so you're right on that end. 

If someone comes at you with a combat knife, your gear won't save you. Though, I'm unsure if the smart molecules will be able to harden fast enough before the knife pierces, since I think their hardening speed and strength depends on the speed of the object that hits them. 

Unsure.

Unless of course they stab you in a space where an armor plate is situated at. Then yeah, you should be fine.