It’s probably terrible, but it would be worth doing a few random houses before shedding it all.
Not that I would do it, because stuff like this can result in the death of somebody.
It takes 2 guys to dress out the one guy in the suit. That “60 minute” cylinder might last that long if you were used to wearing a positive pressure SCBA and sitting in a chair. Working and unfamiliar, it’s going to last maybe 20 minutes.
But it’s a great to sweat off some weight in August!