Only problem is that the caneles probably should be baked just before serving; they may not keep the outer-crispy/inner-soft business going on, as they cool down and sit. I haven’t tried them yet; you might reheat them. (I’ve found that reheating in the oven works out fine with a lot of deep-fried things that people say you can’t ‘bring back’...)
Agreed that oven rewarming can bring a leftover back better than the old micro.