I think in the two or so months since I have owned mine I have stalled it once, and that out of sheer mindlessness. I've found it a very forgiving bike as far as stalling goes. Rattles and maybe a little roughness on rolling off the accelerator yes, but it's definitely engine issues (last night I pulled in the clutch in the middle of one such rattley/rough patch to check if it was something else and it coasted super smooth).
ABS or not has really nothing much to do with it.