I have travelled a great deal over the years, and delayed luggage is an ever-rarer event, but that doesn't mean it won't happen.
Some years ago I was hunting in Cameroon, flying Air France from Paris. My rifle arrived, but my ammo (which was required to be in a separate case) did not. By the time it showed up in Douala, there was no way it was going to reach me in the jungle, so I picked it up on my return to Douala. 40 rounds of .375 H&H as a gift to my PH.
Note that I was lucky that I had brought a .375 - there was a reasonable supply of that calibre available in camp, as I expect would be the case in most places. If I'd lost my gun though, I might well have been out of luck - this would have had to be arranged well ahead of time and spare guns aren't always easy to find in these places.
More recently, some may recall my hunt report on an LDE hunt, again in Cameroon (can't blame Air France this time - it was Air Canada). None of my luggage arrived with me, and in fact I didn't see it again until I was finished my hunt. I won't go over the joys of two weeks in one change one clothes and one pair of shoes. Here, I had arranged a gun and ammo ahead of time, so that wasn't a problem.
I believe the moral of this is that bad things are more likely to happen when you're flying to less common destinations. In addition, in those places, you generally have more limited options to get to where you're hunting, so unlike say, South Africa, where if your luggage is delayed, it can likely catch up to you relatively easily, in Cameroon, if you don't have it, you may not see it again for the duration.
In these cases, while having a luggage tracker might give you some peace of mind, it won't likely get you your luggage any sooner.