I have been using tablet pc and convertibles since 2004. And I have yet to crack a screen. The pre "Gorilla Glass" screens developed scratches over time but even that is a thing of the past. Basically any cracked screen is a sign of planned abuse, hostile neglect or an insurance case.
Faulty HDD on an S/P won't happen. They all have SSD. If that fails => guarantee case.
As for the "multiple devices": Have fun keeping the data in sync. It is doable between Windows units using OneDrive or Sharepoint. Between Windows and Android/iOS it quickly gets more hassle.
And a notebook speced similar to a S/P3 + a decend tablet should cost at least the same.