Recently I had the opportunity to take (and pass) 3 certifications and I did it using Pearson's OnVUE online proctoring. Talking to other colleagues of mine I found out there are mixed feelings about the experience. For me it was an overall good experience. So, I've decided to put together a few thoughts about how it went.
You can schedule the exam anytime you want and you can do it from one day to another. You are home in your office, so it's a familiar space. There is no commute to the test center and back. For me these are the biggest advantages.
The not so good
You have to clean up your desk and disconnect everything. If you have docking station, multiple monitors and other equipment it will be a bit of work to do. If you have other things around your desk (like my old film cameras that I keep as decorations), you will need to move those too. Be prepared to use your webcam to show that cables are unplugged.
Another thing to take care: no one is allowed to enter the room be it kid, partner or pet. This may prove an inconvenient.
The app delivering the exam is not optimized for wide monitors. That makes the questions very long and places the buttons in strange positions. But you get used to it, or better use laptop screen.
The proctor experience can vary a bit. It was fine for 2 exams to use external monitor, not fine during another one. The weirdest thing: I was told during one exam not to look up because that is not allowed and doing it again will fail my exam (!?!). Small issue here: when I try to remember things I involuntarily look up. Luckily I managed to pass the exam without remembering too many things.
It happened one morning to take longer to connect and get someone to enter online with me. It took me more than half hour to start the process. But after that all went well. No biggie here, just start on time.
Once you get the exam started, the experience is the same like in any test center. I am not sure that I would like to go back to a test center unless absolutely necessary (like looking up during the exam).