My experience from static modeling is that people who don't know the paint scheme for the original will still admire a well-painted model, but people who know their way about RL hardware will comment. Normally in a friendly and not derogatory way, but you will probably hear a few comments on every event you go to. Typical case: I have an old (~20y) Nichimo 1:200 Type IX submarine that (as per the instructions, and not knowing better) I painted red below the waterline. The paint job is well done, and I still like it, but I dont take it to exhibitions any more.
But then, I am a static modeler, and this stuff is supposed to look like the original... I have noticed that RC modelers (especially in aviation) have some pretty weird paint jobs and do get away with it without scorn from the community, as long as their stuff runs well.