Glass lens are WAY more scratch resistant. Disposable plastic glasses/goggles are lighter and adequate for light debris and defense against spray paint, etc. but buy several and view them as throw aways.
NEVER use paper towels or tissues to wipe any lens – it will scratch the lens. Like has been said, clean them under water and add a drop of dish soap if they’re greasy then wipe with a cloth.
Get different glasses for different uses. Wrap-around polycarb sunglasses are fine for mowing, but get dedicated safety glasses for grinding, using wire brush wheels, and drilling, etc. Sparks and broken wheels from grinding, wire that sheds from wire wheels, and drill chips or broken drill bits all can make for a very bad day…