Mike,
I can't honestly say that I noticed anything that I can comment on.
Remember, spiking the speakers does two things. First, it couples the speaker to the stand which hopefully is coupled to the floor. The second, the speaker is being raised the height of the spike changing the speaker to your ear, and in essence the sound.
In your instance with your wooden speaker stands, what you'd be doing is in effect, the same thing as placing a component on Mapleshade footers on one of their Samson platforms. That's a good thing and definitely worth trying to see if you like it.
Chuck