Interesting set of questions there...
I remember a time in Singapore, when Singahobby were trying to sell a korean made 6.0kg/0.18s digital standard size servo for $40, and plenty Singaporeans were skeptical to use them on their heli's. In order to convince people its performance/ holding ability/ reliability, they built a test rig to hang off a weight i.e. load the servo to lift a 4.0kg load continuously for days on end! and stroke it fully every time they had time to do so. Now it's their best seller. I also use them on my precision aero airplanes! Imagine the cost saving between a Fut S9252 and a $40 korean servo!
If i recall correctly, ppl also had skepticism for Hitec servo's back in those days... but now its commonplace application.
The only real way to prove a servo's ability/ reliability is to test it and it takes someone to take on that risk either in real life application or simulation.
So please share and report your findings! Thanks for the review!