Those who attentatively read all the threads, may have noticed in another thread I mentioned I punctured this morning.
After seeing the weather forecast last night, I brought my 'Bad weather winter bike' to the front.
My bad weather winter bike has steel rims and solid rubber brake blocks with a leather insert.
This is for a very good reason and the theory worked this morning.
There was a faint drizzle in the air and when I stopped to whip the tyre off, the rim was totally free of that black slime "Squidink" that alloy rims and molded rubber blocks make in the wet.
Changing the tube was quite clean. Just a wipe with a tissue and the rim was gleaming. The tyre was only damp with rain water, so that wiped off easily to give me a clean tyre to handle.
They may weigh a little more than an alloy, but IMO, the cleanliness during a roadside tube change is 'Just rewards'.
I considered building a second pair of wheels for my Dawes Giro, but if I did that, I would need to change the brake blocks as well.