I have gotten them! I honestly love them, but I only do them for special occasions or vacations. When I get mine done it takes about 75 min and they tend to stay on for about 3 weeks before they start to look bad. Usually you would get them filled at about the 2 week mark, but like I said I only do special occasions so I usually just let them fall off. They definitely cause a few extra of your real lashes to fall out than normally would, but if you don't get them done consistently it gives your lashes time to grow back so you never really notice a difference. Overall, they are so worth it!
I wore them for years while living in Atlanta. I loved them. As long as you don't pull them off and keep them dry you won't have any problems. You will also want to get some good recommendations to make sure you are going to a reputable person.
So I personally have never gotten them but I have had a few friends that either really like them or hate them. From what I have seen, if you go to a person who is really experienced and really knows what they are doing, you should be ok.