Most AHJ's and Electricians really do understand what 110.2 states!
The fledgling code reader will learn this in time, in the meantime the concept may delight some, and if the product is listed that's just fine!
I would put the burden of proof of the installer.
110.2 Approval. The conductors and equipment required or permitted by this Code shall be acceptable only if approved.
FPN: See 90.7, Examination of Equipment for Safety, and 110.3, Examination, Identification, Installation, and Use of
Equipment.
See definitions of Approved, Identified, Labeled, and Listed.
