I had 40 profiles on my A4 2.0T that had an extended sidewall ridge that was supposed to protect alloys - they didnt. The forces of a car going against a kerb are just too great, the sidewalls are pushed away by the kerb, the best they can do is hopefully make a noise so that you can make adjustments...
Those Alloygators would have to be extremely strong plastic to withstand the forces - Yes, it would be interesting to hear from anyone who has them fitted?