My brother, Mathsr, and I have used curly ash for knife handles that we got from tool handles, so we are aware of the use of ash for hard wear and use handle material. The reason hickory was chosen for this handle was because I had access to several hundred board feet of it. Both are hard tough woods and very similar in look. I'm not sure you could tell the difference in the way they perform. In this part of Georgia you use what you can get. There is not much of a hardwood market in this area. I'm just hoping the handle stays together. We'll see.
edit...
I seem to recall my shop teacher saying that a well glued joint was often stringer than the original wood..(when we were going about running a butcher block through the planer..) but direction of force probably plays a role..
thanks..
I know hickory is good stuff, hard and good for repetitive blows...I always forget what tools ash usualy gets used in...I think last time I was looking for a rake handle all I found was ash or trash (weak broom type handles) I think hickory might be harder and heavier.