I did it to a Belgian that had a lot of sulfur nose to it and it worked well. I didn't swap the connections to put the gas down the dip tube though. I just let it carbonate like normal, then cut the gas and vented it over a couple days. Repeated it a couple times and it cleared up well. You could tell the sulfur was clearing up just by smelling the vented gas. I have no idea if utilizing the dip tube would speed up the process, though.