For years I've had a Tucker Gunleather "Texas Heritage" IWB holster for a Glock 30.
The Kydex clips that came with it were garbage. Eventually and inevitably, one, then the other, broke. Twice. Even aside from the fragility, they weren't a great design. They never held on the belt very well. They made it a major operation to remove or put on the holster, requiring belt removal each time. I had to very carefully handle the holster when it was off a belt, lest I put any stress on the surprisingly fragile clips. Even with very very careful handling, I went through 2 sets of clips in the last several years. I also had to have 2 sets of clips for 2 different width belts, due to the way the clips go around the belt.
A third set of clips would have been about $20. I didn't care to buy still more clips, since they were so fragile and didn't even work that well, so the holster was out of action for a while.
Later on, I got a Crossbreed Supertuck IWB holster for a different gun. Its metal belt clips were vastly superior, being practically indestructible (and possible to repair), holding on to the belt a hell of a lot better, and being cheap to replace ($10 for a pair). I've never needed to replace the original pair in 5 years of wearing the gun often. This is with frequent removing/inserting of the holster on my belt (rather than having to remove/reinsert the belt), which was fatal to the Kydex clips.
The experience gave me an idea: maybe I could retrofit a set of Crossbreed clips to the Tucker holster.
Yep:
The only drawback is that there is just one set of holes in the Crossbreed clips, so you are stuck with the Texas Heritage's built-in cant angle. I didn't find this to be a problem with a small gun like the Glock 30. Your mileage may vary.
$10 to revive - and even improve - a holster that had plenty of life left in it, but was costing a silly amount to maintain? Not bad. Now that it's all fixed up, I'm sure I'll actually wear out the leather, like I did with the Texas Heritage for my Springfield XD.