Am I to understand you'll not be posting pics of your Demon here? Please don't be offended. Eyebulger was not upset. The smileys in his post tell me he wasn't. Just curious is all.
You've already said they were used for reference. Not really an offense there once you explained. This is not uncommon either, on any forum. Many of us have uploaded and used pics as a reference, and we only ask the source be credited.
I've had pictures of my guitars used in eBay listings and CL ads indicating they were THEIR guitars. Essentially a scam. Either that or in listings as an example but no credit to the source. The ones that hotlink images really torque me off. I usually swap that picture out for something fairly rude, and if the hotlink is not removed, I swap it out again for something VERY rude and undesirable. I have one that simply says "This is a scammer an is illegally hotlinking this image. Do NOT trust" and often that's all the farther I have to go. The listing usually disappears within the hour if not sooner.
We have had people post pics that were grabbed from an auction, CL listing, and other websites and passing them off as their guitar so in that respect some may be a little leery. A few even tried to sell the imaginary guitar here. One tried to sell a guitar here I had at the time. OOOPS on their part.