For a first gun I'd recommend an XD instead of Glock, only because of the disassemble process.
Pasadena Police Dept's OLD building has a "ding" in the floor due to imho, needing to pull as trigger to disassemble the "I though it was unloaded, I took the magazine out" and I had to pull the trigger to disassemble it to clean, Glock.
As long as someone KNOWS a round may be chambered still, Glocks are great though.
I worry that people who put cartridges in backwards, might not know to check the chamber AFTER, instead of before, removing the magazine..
Good thing he called you
