Do tyre savers made of a chain catch debris as effectively as tyre savers made of a wire? Are they practical?

I get a lot of slow punctures in my rear wheel (I think mainly from glass), so have been looking into installing a cheap tyre saver there. They are meant to catch the debris before it gets pushed into the inner tube in the course of several revolutions.

They seem to throw off a lot of spray in wet weather (see Andrew R Stewart’s post on https://www.bikeforums.net/classic-vintage/1102564-flint-catchers-diy.html ), and to avoid spray/mud going into my chain (positioning illustrated in image 1 – not my bike) I want to fix the tyre saver at the trailing edge of my fixed rear mudguard (also for easy access to remove any larger debris which gets stuck; image 2 illustrates positioning).

A wire tyre saver fixed to the rear mudguard seems likely to struggle maintaining contact with the tyre as it vibrates with the mudguard (see Andrew R Stewart’s post on https://www.bikeforums.net/classic-vintage/1102564-flint-catchers-diy.html ), so I want to try a flexible tyre saver made of chain instead (see image 3). (To give the tyre saver enough clearance that it won’t bang against the rear mudguard, I would bend the rear mudguard upwards and let the tyre saver hang downwards).

However, first I want to check whether there are any disadvantages of a flexible tyre saver made of a chain vs made of a wire in your experience. Does a chain tyre saver make any irritating rattling sound compared to a wire tyre saver? Does a chain tyre saver pick debris of a tyre as effectively as one made of wire? If rattling is an issue, what is the best (non-rattly) material from which to make a flexible tyre-saver?

(NB I am considering alternative solutions to frequent punctures as well, but treat puncture-resistant tyres, injecting tubes with sealant etc as off-topic for the purpose of this question. They have already been discussed a lot on this site and are not without their disadvantages, eg increased weight/inertia/cost, so I want this page to be focussed on tyre savers in their own right. Do share tips on any installations which might shield the drivetrain from tyre saver spray in image 1 though.)