The wood will be dimensionally stable in its native environment, as in, a cool church. Take it out of that and put it in your living room or the boot of the car in summer and it will often move - natural materials - got to love them
Even Micarta can move slightly - I did a knife show in America twenty-odd years ago and both linen and canvas Micarta shifted just enough to allow your nail to catch slightly at the edge of the tang/slab junction. It was still a good show but I was very disappointed in what people assume is a completely stable material.
A friend of mine did a show last year in Florida and when he took his knives there from Nevada he said one set of carbon fibre scales moved just enough to feel the edge of the joint - heat and humidity can move almost anything.
I've had much better luck over the years with incredibly dense woods over the lighter timbers. A shift of a couple of percent moisture content (which can occur no matter what handle finish you put on the grip to seal it) can be enough to cause problems and timber from the outside of a large piece will act differently to slabs cut from core wood deeper in the same piece.
The worry from a maker's perspective is always that your name gets dragged backwards through the hedge when folks start talking about materials problems/failures. Nobody ever wants to make a knife and have it returned for this kind of issue, especially in this day and age of internet chatter where a rant, however justified it may seem to the individual concerned, can directly affect sales.
I've seen a couple of the SWC Bushcraft knives and I like what they offer, but not everyone will see or judge them independently for what they are, which is a real shame.
