Range holsters another category
There is always going to be a debate with any tactical or firearm accessory. What is it being used for and is it up to the task at hand. A concealment holster might not be a $180 leather shoulder rig, it coule be something as simple as $12 pocket holster. There are tactical holsters that will secure your pistol while your running through the mud and training in a Carbine Course, or you can have a IWB holster for your everyday CCW.
Another thing to think about having in your box of holsters is a simple range holster. If you are at a gun club and planning on doing some serious range blasting, you might want to consider a range holster. A range holster is usually something that you can wear outside your belt which is a clip on our paddle style. Whenever some of my friends and I are going to be pulling an all day range trip, we’re usually carrying a full size handgun and IWB is not a comfortable carry option. Fobus Holsters are in the $20 range and if you’re wearing a good belt, you won’t notice the weight of a full size gun like a Beretta 92 or Glock 17. It’ll make carrying and practicing much easier than constantly picking your gun off a table.