can you do great things with them? yeah. but it takes a lot of work.
do they have a safety enclosure? yes
is it made out of things that actually block the harmful laser light? no
do they come with laser glasses? Yes! But they aren't wraparound
will people go blind from these if they don't know lasers? Yeah probably.
I remember the local hackerspace had to buy the correct kind of laser blocking plastic for the viewing window because they just shipped it with laser transparent acrylic, and people only knew that from reading up on the device itself online pretty heavily.