Terry,
Your description of your own writing is interesting. You said you conciously chose three different styles for mood so when I read your book I will look for that. I am sort of curious that you can actually choose to do that.
I tried to do that in some way in my own book too, although I can't tell you how many styles they were. I sort of experimented with a mashup of memoir / screen play / romance novel / doctrinal dissertation / humor (ala Erma Bombeck, Dave Barry, et al) poetry and other styles. I'm really not a writer (at least not in the traditional sense) so I don't have a particular voice. I wasn't really even looking for one, but my wife said I did have a voice after all. Since she's the writer in our family, I'll take her word for it.
Mainly, I just wanted it to be entertaining. Between you, me and the JWN walls....well... I really don't care for the "super-serious, overly scholarly tome style" myself. I read technical materials all the time for my work. I even write them. When I read for fun, I kind of want it to be fun, at least in some way. It can be a serious subject, but it still should be fun to read, an "easy read" if you will.
Like your short story "Caterpillar eggs".
But that's just me.
Brock Talon