With my rack, I have to remove the skewer to remove the wheel. A minor inconvenience, to me.

There is another problem that has cropped up recently. I've had to replace the pop rivets with screws, and change out all the sheet metal screws I used for longer machine screws. I used #8-32 screws, about equivalent to 4mm fine thread, with self locking nuts. For you, a 30mm would work for the 25.4mm box section. Yes, I used 1" (25.4mm) for my rack.

Another gotcha is room for the rear shift cable. A longer bottom section where I dropped down under the cassette/derailleur would have been better, leaving more room for the cable.

Heim joint is a must, My swivel wore out the rear crosspiece in only 1000 miles. Turned the round hole oval.

Good luck with your build, however you do it!