I think the sold out part of the Rad's unsuitability is due to the change in Seasons.
I am pretty sure they will be back soon. You are right I have seen them on bikes.
No doubt they are heavier than other fenders. I can say the ones I saw
were well painted with a nice finish.
The plastic ones I saw looked more utilitarian with a dull matte finish.
However they didn't need struts. The steel one had struts which
to me takes away from their look.
I hope you get nice fenders.