Aluminum Drive Shaft Options?

bringing this up again, I have a question about an aftermarket chromoly trans slip yoke I have... like the rear, it has u-joint caps. what is the purpose of this? Is one style better than the other? one good thing I guess is when pulling the DS, you can leave the yoke in and not have fluid drip all over...

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For the same material, solid design is typically stronger(engineers like)and has fewer parts(factory bean counters like). If a solid yoke was practical at the axle, it would have been used there too...but its not, so its not.

With that said, your super duper yoke is far stronger than a solid stock yoke even with its bolt/clamps, so you're good.