With the use of biologicals in plant care, it is the microorganisms' metabolites that have the effects on the rhizosphere and the plant. Each species puts out different metabolites, so has different effects, so it pays to apply as broad an array of "good bugs" as you can. Unfortunately, it isn't simply a matter of mixing them together, as they can compete with-, or even cannibalize each other.
To Katrina's point about worm tea, and not seeing anything with its use on orchids, that may have to do with the specific microorganisms that grow in the tea. Some are only viable in organic soils, while some can populate plants themselves, as well. Which ones are in worm teas is somewhat random, depending upon whatever is local where it is made.
I have no doubt that Quantum Orchid has some benefits, but its formulation is somewhat limited compared to other, less-expensive products.
I will acknowledge that I have a commercial interest in this area, but you might want to read about
Inocucor Garden Solution, which just happens to be on sale.