Foot braking only will likely
cause wheel lockup, as the ABS system has limited capabilities at low speeds and whithout it you are applying the same amount of braking force to all wheels.
This however does not hold true for rear wheel drive vehicles which can have a strong weight transfer (high, soft - suspension cars, as most US vehicles), as the added braking force on the rear wheels without added (weight - transfer caused) friction could
cause wheel lockup and possibly loss of control of the vehicle.
Not exact matches
With a car,
wheel lockup might
cause a skid, but on a motorcycle, it often means a loss of balance and a potentially deadly fall.