Tore day 1
I put on my wetsuit dry at home to test it out and had no issues. First day on the beach to test in open water, the suit ripped about 2" on the leg. I got another gash down to the micro layers on race day about 2 weeks later (4th time waring it).
I used plastic bags over my hands to protect from my nails, and followed all instructions.
It worked great during the race - even with the tears, I didn't feel any excess water in the suit.