I had an Australian cattle dog crossed with a lurched. Totally loyal, biddable and game. Just lacked a bit of speed.
I know a lady who breeds A.C.D. - she doesn't always use the best dogs with the best temperament. As long as they win in the show ting she's happy.
I also owned an Irish terrier. Lovely bitch, great temperament, not aggressive unless provoked, and remembered her training well - sit, stay, come etc. Great with kids.
I would love an Irish terrier first cross. Thick skin and coat, light build, hunting instinct and bold.