So, I’m not Amal. (duh, right?)
But… They contain radioactive tritium gas. Break it open in the air, and it’ll mostly dissipate. Break it open inside of you, and your flesh will absorb all that tritium. Not good at all, definitely unhealthy. The xGLO is not gonna make a comeback in any realistic scenario.
There is hope however. Been some experiments with glow powder as a light source. But unfortuneatly it’s been pushed to the back of the new projects queue with some other stuff taking priority. Till it comes out, you can read about it here.