Then how to form the "twist" lands without deformation of the achieved interface perfection? Difficult perhaps. More so if multiple twisted end sections are to be considered fitting to a single smooth section.
There will always be a transition in a two piece barrel even if only a perception, this may cause commotion to some.
I don't say it is impossible to achieve useful results, but the process will be expensive, and perhaps best suited to development programs that determine optimum dimensions to be applied to production methods.
I am sure the price point on the manufacturing level is less than $100 per.