I use velcro rollers all the time, however they never make a "curl", mostly just waves and volume. I tend to set my hair up in them and just go about my daily life for 1-2 hours. When I take them out I have a small wave and lots of volume.
I use the waves to my advantage and only use the curling iron 3-5 times in big pieces. Makes it quick with the hot tools.
Alone, I do not think they will get you the look you are looking for.