Yes, the Radias can do it too. Seems it's native to Korg VAs.
However, I think Access pinched the idea from this thread and incorporated it into OS v2 of the Virus TI under the "
Wavetable PWM Oscillator -
Takes two instances of the same wavetable and phase-shifts them against each other to achieve an effect reminiscent of the traditional pulsewidth modulation of a pulse wave oscillator.", as shown on page 8 of their OS v2 addendum:
http://www.infekted.org/virus/files/AddendumOSv2.pdf
Which is exactly as described here.
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PS > And another thing! Will the Ti|3 have user customisable/importable wavetables?

A ribbon-controller or XY-Pad might be nice, too, please! Thanks!