Man I wish you were closer to me in Oklahoma! I use apple, cherry, and peach. I've had discussions with folks who say you should use them green to get the best smoke. I have always used them somewhat seasoned. I like the mild smoke. Good on lighter foods. Still use Oklahoma pecan and/or hickory for the big packers, ribs, and butts.
I've been using my fruit tree cuttings, peach, apple, pear, etc for smoking everything from ribs to brisket to kielbasa (cherry), and yes, i've used a chainsaw to cut them. I have never noticed any bad flavor from the bar oil. I think worrying about this is a little anal. That stuff is a very thin oil that evaporates pretty quickly, any my wood seasons a long time before i use it.