I've only played cello once, arco, it was DIFFICULT to get a good sound out of that, easier than a violin, but way harder than an upright bass, just to get a clean and strong sound was a challenge.
They are tuned like upside down tenor basses(in 5ths) C-G-D-A correct? that'd make them a bit tricky I think, though I wonder if you could restring a cello to be E-A-D-G ?
I know Victor Wooten plays cello extensively with the flecktones, and he isn't bad neither.
He also has a tenor bass tuned A-D-G-C that he plays equally to his standard bass, so I'm sure the transition to cello for him, was a little easier in that respect.
Things that would make cello easier, the size and tension on the strings is a lot less than an upright, but that would also stand to make it more challenging I think, because with smaller instruments like that it's more difficult to keep good intonation.
but, having a lot of upright experience, would probably negate that.
I'm kind of rambling, probably haven't helped at all
