You're a Fighter designed to fight with a sword and shield. At level two you multi-class over to Wizard with one General Feat and you get two cantrips. You can pick the Shield cantrip.
During your turn, could you Attack, Raise a Shield (physical), and Raise a Shield (cantrip)?
When you're hit, do you get both reactions or do you pick one?
If you get both, which applies first?
I would rule that you can raise both a physical shield and use the shield spell. Remember that bonuses of the same type don't stack, so you only get the best boost to AC (most likely the physical).
You (normally, iirc there's feats that add reactions) only get one reaction per turn, so you'd only get to block with one. Taking whichever hardness you'd prefer (remembering that you if you use the shield spell to block you can't cast it again for 10 mins, regardless of how much it blocks)
Ah yes, that makes sense.