Ok, for some reason Ready Weapon just doesn't come out completely clear to me.
Ready weapon is a simple action, and represents drawing your pistol, drawing your sword, unslinging your rifle, or nocking your arrow. Basically it's the universal 1 simple action "payment" to get your weapon into play. Correct?
Quick draw is basically a fancy way of saying "you don't have to 'ready' your weapon." Attack without spending a simple or free action. Right?
Ok, Krav Magra (probably misspelled it). It allows you to ready a weapon as a free action. So that means that, if you take the bonus, you can ready (draw, nock, unsling, etc) any weapon that you have, in what amounts to no significant amount of time. Without a check of any kind.
So, besides that you might want to use your free action for something else (like aiming for free), any gunslinger, sword adept, or general runner would really want to get this super nifty, universally useful bonus. Right?
Granted, it's 5pts as opposed to Iajitsu for 2pts or Quick Draw for .5 (5bp) magic points. But it comes without a check.
Did I get that all right?