Bonmusica Shoulder rest Viola 16,5", bottom width 240 mm

How well does the rubber on the feet hold up over time? I've had shoulder rests like this in the past that ended up scratching my instrument.

Will this fit a 4/4 violin also

I have today found out my son need 250mm what is the measurement for this one?

My viola is 16.5” long and 10” wide at the widest point (near to where the rest will sit). Will this rest fit?