You could use it, if you really think the pedal sounds better than the processor for the sound you're looking for. But I'd advise that you actually try the combination first. Amp models are meant to be used as a substitute for the amp, so that you can go to the P.A directly. Otherwise it's like plugging an amp into another amp.
I would personally want compression before the distortion, especially when it's not amp/amp model distortion.
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