I think Vapor Joe greatly overestimates the difficulty of reverse engineering a mod or atty.
You are kidding yourself.
You do own a few reals right, and a few clones? If anything, the difference between most of the clones is the quality of parts, NOT the design itself.
Most of the clones are designed practically the same, with slight variances IF that. The qualities of the metals and manufacturing used is more in question than anything.
Also, this kind of thing isn't new. In the pharm industry, many 'generics' are manufactured by the SAME COMPANIES/FACTORIES that manufacture name-brand medicines. The only difference is the companies who put their names on the name brand buy a certain amount to stamp their name on....the rest get called generics and get sold for cheaper. Often times the SAME PRODUCT.
When china manufactures clones.....often times they are making the EXACT SAME PRODUCT.... except cutting costs by using cheap labor, someone's ELSES design, and cheaper metals.
Of course, that isn't always the case. Sometimes the china clones are just cheap china crap...a COMPLETELY inferior product. Other times....I've seen china clones that use high qualities metals. It is happening now. Virtually the exact same product, a complete replica.
Bottom line, if you are buying clones, do your research.