The categories answer different questions: reading glasses add plus optical power for a chosen near working distance, helping compensate for age-related loss of focusing ability; protective eyewear reduce exposure to a defined hazard such as impact, particles, splash, dust, or optical radiation when the protector is correctly rated, shaped, fitted, maintained, and compatible with other equipment.
Choosing well requires attention to different mechanisms. For reading glasses, examine plus power and working distance; for protective eyewear, examine hazard assessment and protection rating. Only then do added features help, because the intended outcome is settled.