Bummer...but there are lots of options for an under suit/coverall.
I went with this one and removed the 4 pockets easily. Then I customized it with mandarin collar, added suede patch and elastic, suede butt-flap. Total cost: $60 (and some time and finger pokes...)
http://www.automotiveworkwear.com/RedKap/CT10/coveralls.html
A lot of scouts go with this one and customize it. This one is really nice.
http://www.speedwaymotors.com/Safety-Racing-Proban-Single-Layer-One-Piece-Economy-Suit,2466.html