Correct, I believe a Shimano crank would go on there just fine because of those outboard bearings. I'm wondering if I were to go with another crank, like Rotor 3D+ or FSA, in PF30, whether I'd run into clearance issues.

I have attached two more photos of the brake clearance issues - one photo shows a comparison with a 10 mm allen key. For reference, the typical clearance required for the Stages/4iiii/Pioneer PMs is 10 mm, hence I need to be able to fit that 10mm key