The thing is that you will need to either do it yourself, or perhaps pay a person with the right equipment. Maybe you could work something out with Amir and send him things to test... but he would need a reason to make it a priority in his schedule. He's already indicated that he's measured stuff like this before and seen no evidence of a beneficial change as your acquaintances seem to be claiming.
Anybody involved in learning Speaker design is faced with the question of XO components. It is no different in many ways than the age-old cable BS. I used Audyn Q4s as my caps. The guy that designed my speakers likes them: they aren't expensive; they work well. But why not some $100 Mundorf Silver-Gold Oil cap?
Why? Because it does nothing! Certainly sounds impressive, but the clue something is wrong is that the people making the claims don't show us the science.
Thus, you are chasing the science. Rather you should tell your friends they are full of it and move on with life.
I mean, were you seriously questioning the quality of your ears or just joking?
Move on and enjoy some music or a good movie!