Wide body pistols Glock, Sigma, Springfield XD, etc. especially cause a holsters to close up on itself when these weapons are drawn.  Holsters  should not have a flimsy material in my opinion and Horsehide or Kydex materials allow easy access and holstering. 

For that reason I prefer single stack and more narrow frames weapons such as a Colt Commander or Sig 220 and a Kydex or horsehide holster which offer more durability and concealment.  Flimsy holster materials that collapse make drawing and holstering the weapon more difficult, dangerous and the weapon also prints (shows its outline).   

Accidental discharges will occur because humans are occasionally negligent.   How a pistol is worn may increase or decrease how severe an accidental discharge will injure the wearer or others.  How a pistol is worn will also effect comfort.  An improperly made or worn ankle holster can be torture digging a barrel into the leg and flopping the pistol around as you walk and may be impossible to draw while wrestling in a close confrontation.   An inside the waistband holster can be uncomfortable sitting for long hours and can also be dangerous if it is worn in front of the wearer in the appendix position and the weapon discharges while sitting into the femoral artery.  The SOB (small of the back) holster can also be uncomfortable sitting for long hours and can discharge close the the spine.  Holsters that cross draw such as shoulder holsters may discharge into the brachial artery of the arm.  Every style of Holster has it's advantages and disadvantages to consider and the purchase of any holster is a compromise of factors. 

Every situation is different this is for information only and this is not legal advice.