Had one for about six months and I do leave it on overnight fairly often with no issues. For the price it warms my small room fine, so worth it, but don’t expect it to slash your heating bill if you’d otherwise run central heat. Safety stuff seems solid and I’ve never had it randomly cut out.
Mine’s light and the grip’s surprisingly comfy so my hand doesn’t cramp during longer scrubs, trigger action stays smooth. Tucks into a small drawer in the garage and still working fine after a few months.