I don't have the chalk pouncer. I use a foam brush and it works fine. I only use the Miracle Chalk because it's the only one that will not bounce off when I'm quilting. I am really allergic to the chalk and have to use a mask when I use it. I have also used school board chalk too for marking but have never had the courage to use anything but white. I've read such horror stories that I'm not willing to take the chance.
Also for you quilters that use the air erase marking pencils or the blue marker that comes out with water, take extreme care with that. If the quilt is not washed/rinsed following the quilting to remove all traces ( you may not see them because you've spritzed with water) it is possible to have the marked areas to develop brownish stains on the quilt. This happened with a client quilt I did. Due to some personal issues she had this quilt wasn't brought out to bind for 8 or 10 mos..not sure if it was still in a plastic bag or not or if it was exposed to heat or sunlight but I tell you it was one mess of stains. Such a tragic thing to have happened. It could have been avoided had it been washed/rinsed right away. I would never take that chance. I know a lot of quilters say they've not had problems and I'd call them really really lucky.