I think their use with the SAS, CRW etc. Some iconic pics from the Iranian Embassy. When it came out, the increased mag capacity over the other 9mms made it stand out.I'm sure I'll be branded a heretic but I've never really seen the appeal of the Browning HP.
Of course, that said I don't like Glocks either so what do I know?
Lastly, it looks damn cool imo. Just a classic JM Browning gun.