Glas told the jury in opening statements that the drive stun was more painful than the probe shock, but administered less electrical current to a body. [LINK]
The above statement appears to be utter Bull Sh_t.
As far as I know, the X26 taser emits the same electrical output via the probes and wires, or when pressed directly into the subject's flesh (Drive Stun or Touch Torture mode). In fact, the long wires can only add electrical loss, so the power must be higher in Drive Stun mode. This may be offset by the penetrating darts eliminating a voltage drop or two if they actually penetrate the skin.
But, the maximum possible power would be if the taser were pressed directly into the subject's flesh.
The so-called Drive Stun mode does not get a free pass on the risk of death. If there is a risk of death with tasers (as admitted), then the Drive Stun mode is included.
Anyone that testifies to the contrary may be 'stretching the truth.'