The way I look at it, it's no different then using mineral with IGR or Rabon. When I was looking into Crystalyx with Rabon I was told that the products doesn't leave the intestinal tract, therefore it has no effect on a "natural" product.
I have told my customers that I'm not organic because I want the option to treat a sick animal the way I feel it should. I will use LA-200 or Tetradure to treat Pinkeye but I carefully follow the dosage by measuring body weight, track the lot number, experation date, injection site and witholding time.
I'm pretty good at educating my customers. For example, why the problem with antibiotics is not treating animals, but the daily amounts in the feed on feedlot rations. That is what's causing resistance.
I'm planning to use Vigilante on my calves that I will be slaughtering, I won't hide the fact from the customer. I can point to a steer in my herd who got pinkeye last year, got the very best treatment I could possibly give him, above and beyond what most people would do, and he still lost his eye. Not only that, but it actually sticks out. I bought him a $17 fly mask yesterday at the feed store to help him through his last summer.
I want to do what I can for my animals to fight off flies. As far as running them through the chute, I'll be vaccinating for Pinkeye and putting in fly tags at the same time. With these three things I'm going to see how it works out without using the cattle rubber. Mostly due to the trouble of moving the thing around in a Management Intensive Grazing System.