This is what we decided to do... the original owner of our property replaced the barb wire along this 100 yard section with smooth wire... again, this is an assumption, however, all the other fencing around the neighbors property is barbed and the smooth wire there now is part of a continuous run along our property line...
If the neighbor does complain, or if there is an issue in the future with new owners we'll replace the t posts on our side and redo the field fence.
We weren't able to use any prefab clips due to issues raised earlier in this thread (V shaped clip installed "backwards" requiring tedious reforming of the clip)... we used 6" sections of the "waste" portion of the field fence and bent it to fit... a little more work to cut the pieces out but, what can I say, I'm frugal...
Living in Montana has it's perks... one of which is: We've yet to encounter any issues with our neighbors (or the local government) where they tell us, "Hey, you can't do that here!" Of course, we've contacted our neighbors before making any "permanent" changes to our property and we try to be considerate neighbors.
Thanks for all the replies here... many items which were brought up, well, I really hadn't thought them through...