Aluminum Drive Shafts.... thought?

Detroit Iron said
What opinions do you all have on aluminum drive shafts for daily driver applications?

I just put a 5 inch, aluminum shaft with upsized 1490 U-joints in my 2008 GMC 2500HD. The shop I got it from said they have guys running this same driveshaft in trucks with 2400hp & 1300 ft lbs of torque without issue.

Got it here.
Aluminum lead sheet

I also went with aluminum driveshaft using 1350 u-joints in my 1968 Barracuda. It's beautiful, and the driveline has never been smoother.

Got it here.
39550 - Mark Williams Enterprises, Inc