From what I understand, olive is very hard and dense as stated before, and that would lead me to conclude from experience with other hard woods that it would probably have a crisp, clear, and snappy high end.

Don't underestimate the effect the wood you use has on the tone of the instrument. If you put the same pickups in the same style guitar that are made from different woods, you WILL notice the difference. Example, if you put the same p/u's from an alder bodied strat into an ash bodied strat, you will notice the difference. Fingerboard material also plays a significant role in the tone, as well as your choice for neck wood.
I am curious as to what you will find out from using the olive. It is some good lookin' stuff.

Good luck