If we're still talking Rupp's spikes at the BU indoor, he keeps using a different colored version of the mamba upper from Olympic trials 2012 through now. For above 5k, he'll have a matumbo plate. At 5k, I've seen him use the matumbo or old vic plate. At that race he had the mamba upper and the old nike vic plate. Farah still uses the old nike vic plate, too, for 5k or under--did so for the Olympics, too.
Don't know why elites keep avoiding the vic elite, but I think Lagat has used the new vic uppers with the old spike plate, too. At Moscow this year, it seems he and others were using silver/grey versions of the old vic plate. Symmonds at the Olympics is the only elite I can spot using the vic elite as it was offered to the masses--new volt upper and black carbon fiber plate.