Yeah if the zopiclone puts you to sleep i think what you are describing will work
now that i think about it the story about the hallucinations was someone on zolpidem not zopiclone
he describes it as
"As the effects keep coming up over the next 10 mins or so, relaxation becomes more pronounced. There is a feeling of beeing light and free and worries/anxieties are swept away. Skin feels different, almost fuzzy. Movement in the peripheral vision increases and spreads to entire field of vision. As long as I constantly look around the room nothing is unusual but as soon as I keep still and stare at the same point strange things happen: Patterns on floor, wallpaper, furniture etc. start to breathe and move in wave-like motions. Curtains seem to move in a light breeze of wind. Objects in the room are moving, but without going anywhere. Entire surfaces like floors or walls can become completely liquified and it looks so real I sometimes touch the wall/floor, almost expecting my fingers to melt into it. Strong light looks odd and fuzzy. Every strong source of light leaves afterimages and tracers normally not seen. If all light is turned off for a long while and then suddenly turned on, it is not unpleasant, but seem to fade in slowly without hurting the eyes."