I have 3 OEM CZ mags and 5x tanfoglio mags. I've dropped the tanfoglio mags every Wednesday night (indoors, concrete floor) in practice and twice a month at various events both indoors and out without a dent or deformation of the base plate. I'm certain i've skidding across the floor a few times on them too. I'm probably going to get the rubber base pad when Freedom Ventures gets them back in stock next, I keep forgetting to get them when they have them in stock.
I was thinking about the Elander mags when I went to purchase additional mags for my CZ, but based on their performance with the 1911's I opt'd for the tanfoglios.