A relatively stable grip is required for pretty much any semi-automatic to cycle reliable, especially lightweight frame models chambered in lower power calibers. While a particular gun may be extremely reliable in controlled static two-hand range shooting conditions, that may not be true when firing one-handed, from an odd position, while moving or in-fighting, but in an actual defense situation that may be the reality. That’s why my carry gun is most often a revolver and I reserve the autoloaders for home/hotel defense.