Ooo, fight fight fight... Duel at dawn, choose your weapons.
I too am interested in diaboloists other juggling talents as well. I'd like to know whether it transfered over better learning and coordination skills if you practised other props.
Matt Hall is a don at many props including bouncing and cigarboxes. Tony Frebourg bounces and ball juggles. JiBe passes clubs like a demon. Most of TMFP aren't shabby jugglers either.
Norbi and Luke Burrage are nifty toss jugglers too. I work on 5balls, bouncing, some rings and firey stuff when I'm not diaboloing. Though I'm not fantastic at any one prop unfortunately

Maybe I should specialise more.
Chiok