The holster shown in the original post is good enough for a utility holster. That is, for holding the gun at the range, walking in the woods, even hunting (Note: for those purposes, it hardly needs the retention strap.). However, there would be specific gun uses that would not be in tune with that holster. For instance, if you preferred a cross-draw for conceal carry, it would likely benefit with some kind of belt loop that held it higher on the belt than that drop-loop and with slightly more forward grip angle. If that holster is going to be used for the things I mentioned first, then it is good enough and will likely last a very long time.
Not often mentioned by Christians: Numbers 31:17-18