any building with penetration with screws to hold in place is a leak point double seam has none only venting through roof penetrates, bullet proof system that flexes and contracts with bulilding. The expansion and contraction loosen screws and the neoprene washer on screws breaks down in 5-7 years leaving you with pin hole leaks all over.
The reason most don’t do standing double seam is labour costs, 3x more than standard metal bolt on roof. In old days it was called cathedral roofing it lasts 100 s of years. Just don’t go cheap on gauge no less than 24 gsuge. If you want forever roofing check out company
https://www.rheinzink.com/en/products/roof-systems/