I replaced my footbeds, but I replace them in almost everything (Oboz is about the only exception). Some say the Salomon's have enough support on their own, just not for me.
For me, these boots are light hiking, maybe light backpacking (unless a daypack I'd probably choose something else), but more so, I've been doing my workouts in them. They do have good ankle support and certainly comfortable, but just from running around at my brother's farm, I personally want more support in steeper, rough terrain. Your mileage may vary; I don't have great feet so they get fatigued without the right level of support - yours may not.