There's no accounting for tastes. One of the reasons I've stuck with my Sony A77 rather than upgrading to the A77 ii, is that the A77 has Minolta's unusual flash shoe, which I think an excellent design, and the new A77 ii has the new more standard foot, allegedly compatible with Nikon and Canon's flash shoes. The new one takes longer to put on and take off, and is more liable to come off by accident. I have flash guns and flash triggers with both styles of foot and much prefer the old style. I can't see what these protective shoes would do to protect your flashgun's feet, unless you're in the habit of letting your naked unbagged flashgun rattle around inside a bag with a pile of lenses, batteries, and other unbagged or uncompartmentalised gear. In which case I think you're at risk of many more kinds of damage problems than just a chipped flashgun foot.
On the other hand I'm sure the reason Sony decided to go for the new standard kind of flashgun foot with its latest camera bodies was because they take your kind of attitude to the old Minolta flash foot rather than mine.