You could.
I have.
The two widely available 0W-30s are GC and M1.
They are very different oils.
The M1 has HTHS of 2.99.
The GC has HTHS of >3.5.
Mobil gives us the HTHS of their 0w30 in their PDS.
Castrol isn't so helpful, but given the Euro specs that GC meets, it has a minimum HTHS of 3.5.
What I am trying to demonstrate is that it isn't as simple as selecting an SAE grade.
You could probably use either 0w30 with good results.
One is quite thin, though, and the other is pretty thick.
One probably has more Grp IV than the other, if you care, although neither Castrol (BP) nor Mobil actually tell us what basestocks they use in any of their finished oils.