Everyone wants to know which styles really work in a real life situation.
Everyone wants to know what techniques really work in a real life situation.
My philosophy is that rather than viewing things that way,
I ask myself this very important question.
"What can I do to increase it's chance of working in a real life situation?"
With this view point, I'm the one that's responsible, it's in my hands whether something is effective or practical. It's up to me. I don't blame the style or technique, those things are just the tool.
Say you fail a calculus test in college, so you start yelling that calculus is stupid and it doesn't work. Nobody will take you seriously. They will look at you like it's not calculus that's stupid..
I would imagine that a good plumber is one that doesn't blame a tool for their failure, but one that blames their skill and knowledge. If they accept the responsibility of their failure they can also learn and improve upon their failure.
No matter what style or technique it is, I think one can find it's effective and practical use through practice and effort. If you want to be able to use your tool in real life, then you need to have a realistic viewpoint and realistic expectations.
And never lose faith that something can indeed work, even if you can't figure it out at the moment.