It would probably look like Okama-Lombard, though a bit more dominant. I doubt Lombard would seriously rock GSP like he did Okami, though. Condit was able to rock GSP because his striking is a lot more diverse and unpredictable. Lombard just tries to stalk you down with heavy haymakers. Plenty of other fighters (like Koscheck) had the KO power to rock/finish GSP, but he never gave them the opportunity.
Nostalgic MMA Math: Harold Howard in a wife beater > Healthy Shogun > Hungry Rampage > Chuck with that look in his eyes > Prime Wand > Motivated BJ > Any current UFC champ