Hubby and I both have one. I'm amazed at how quickly I got used to mine...no problems at all, and I HATE having things over my face. Hubby took a bit longer to get used to his, though.
I really disliked the sleep study itself. First they stick things to your head, neck, arms, and legs with goop that feels like slimy candle wax, and before I was ready to go to sleep, the nurse took my glasses and book, and turned the light out. Then someone came in about 2 am to restick stuff to my neck. I was so glad to get home so I could get some sleep!