Do glass mousepads wear down PTFE mouse feet faster than cloth pads?

Yes, glass pads wear down PTFE feet significantly faster than cloth pads. PTFE is a soft polymer, and glass’s hard, non-porous surface grinds against the feet, causing abrasion. Expect to replace feet every 2–4 months on glass versus 6–12 months on cloth. Stock up on replacement feet if you switch.