I have used it, honestly I have used it and it was quite bad.
You didn't ask there, so I asked for you.
Checks to it are extremely limited and your counterplay is narrowed down to, for the most part, trying to out-offense it (it has good bulk, so this is difficult to do) and stuff like contact punishment (fair counterplay but even then, it just clicks Seismic Toss and 2HKOs the entire tier). Parental Bond kinda just breaks the Pokemon in general, letting it significantly wear down would-be checks like Ferrothorn and Landorus-T. It's nearly impossible to switch into with numerous coverage moves to hit Normal-resistant foes like Aegislash (a bad Pokemon anyways, but some might consider using it to check Mega Kangaskhan) and Heatran.
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