i use a neusonik iboard4, and both pitch and mod wheel work fine, without manually connecting anything.
connecting the volume knob via midi learn worked fine, too. connecting another knob to cutoff failed, though. when moving the knob, cutoff moves to 0 every time and does not move anywhere else.
update: mod wheel does not work on my present irig keys pro and korg nano keys. neusonik is sold, so i cannot check. :-(((