AMF, pretty bad. I have O-gauge locos with no traction tires. Two have (or had---it's weaker now than these were 60 years ago) magne traction. A 624 switcher starts to slip on my gentle grades when pulling 4-5 cars. The 2-8-4 is slightly better. For the ones with nothing, forget it.
Many decades ago, I would put tiny rubber bands on a driver, against the flange, and for a few weeks they would be great. Then they'd break. I'd rather change tires occasionally.