Furthermore, many FMAs like Escrima, will also teach using your Free Limbs to strike and grapple if your Weapon Arm is at risk.
I consider it quintessential to take this into account, since someone trained in such an Art wont for a second remain still if you catch their Weapon.
Very good point! Many of the knife drills that we do, incorporate the other hand. I think that alot of times, when people are working weapon defense, they often forget about that. The badguy stands there, when in reality, he just may start resisting, grabbing, punching, etc.
That is true , but is that the type of person that is likely to be bailing you up for your mobile phone and your wallet?
Or is it more likely the attacker will be a desperate junkie with no training at all but just an intense desire to get money for the next hit.
Training time is a finite resource that must be spent wisely , I think the bulk of the training should be spent in preparing for what is the most likely scenario to occur.
It would be a bit like saying everybody must gear their training defences against being simultaneously punched and low kicked at close range whilst one of their arms is being controlled in case they happen to run into a Wing Chun guy thats a drug addict , the chances are extremely remote of that happening.
Just going by news reports it would seem to indicate that most of the people doing the attacking would be far too lazy and lacking in character to pursue any martial art for any length of time.
They want to do things the easy way , that's why they turn to crime in the first place.
Also valid points, however, I dont want to assume that the person I'm facing isn't versed with the weapon he's using.