The Blues star is leaving NZ at the end of the Super Rugby season, but won't be playing in the top tier.
The Blues back wore a one-of-a-kind jersey without the logo of a major team sponsor against the Hurricanes.
Investec and BNZ will not appear on SBW's jersey on the grounds of a "conscientious objection".
Williams was the only Blues player to wear a jumper to training today, as the sponsor covering saga drags on.
The focus is on the Canes, says Kaino, not the alterations by SBW to cover up a sponsor on his jersey.
The Gordon Hunter Memorial Trophy is contested by the two Super Rugby teams he was involved with as a coach and has been the property of the Highlanders since the Blues ceded it in 2012.
It'll be the second-five eighth's first game of 15s since the 2015 Rugby World Cup final against Australia.