Although be warned that the lip vibrations you use are completely different. Brass instruments are played with really tight lips while the didge is played with really loose lips.
I was speaking to a trumpet player in a music shop that said after so many years of playing trumpet he just can't relax his lips enough to get a proper drone.
Once you do learn and get circular breathing down it becomes very rewarding.
I was not very good at the tuba
If you play the tuba with lose lips it sounds like a didge.