We had a malinois that was supposedly bred in Holland then imported and trained to find drugs but was put up for adoption. We had a trainer evaluate his drug finding abilities and he could indeed sniff them out. He also was trained to protect his handler. I found that out one day when my wife was walking him and met me with my Stihl weed wacking visor/headphone on.
I think he washed out as a drug dog because outside he had his ajenda and would not come until he was darn well ready. When I used to walk him and my French Beauceron around the farm, I would keep a leash on both until about halfway through the walk then release them and they would stay with me. In the house, he was happy with a rope toy to chew on with an occasional half an hour of "tug" time. I used to get those big ropes from TSC for him. They lasted quite awhile.
He is gone now, having had his hips go. I would not seek one out but would gladly take one in if need be. Absolutely, the breed needs a job, some more than others.