I've used it with great success. I had to replace some of the decals on 3 drop targets and used the following method:
Print decals on matte adhesive backed paper (8.5"x11") on a laser printer
Placed mylar over the printed decals (beyond the decal itself)
Cut out the targets
Install
They look like the original decals, and you can make custom decals this way as well. I'll say that I've had these on my machine for a year now, and they look as good as when I put them on.