Yes & no.... but pretty much yes. I dipped a light switch cover and was not really happy with the results so I rubbed it all off with a scratch pad - for like pots & pans - after it dried & before I clear coated it and it came all off pretty easy. Then I re-painted it and re-dipped it and it came out pretty nice. I also dipped one of my AR15 Pmags and didnt like it - it wasnt that bad, just not perfect and I'm kinda picky. But after it dried it wouldnt scrub off very well so I painted over it and dipped it again and it turned out alot better. I guess if you cleaned it off before it dries it might be easier. But I'm sure there are things that you are not going to want to have to scrub & repaint, I cant really think of any right now but it seems like there would be some things. I dont know if I'd want to have to do that to my rifle barrel if I got a bad dip - but I guess you could and it really wouldnt hurt it. I've found that the water temp and amount of activator can really affect the results. Too warm of water and the film spreads out really fast, too much activator and its really sticky/slimy after you dip - too little activator and it doesnt take nice and wrap around the part well. It took some practice before I got good results.
I started a new thread under General Gear called Camo Dip Kit and have some of this info posted there if you are interested.