No, in my opinion they have zero chance. I mean, why is the game like it is today? If constant S&V would be a winning strategy, then some people would play it. They would get passed left and right, there is no doubt about it. Ivanisevic has next to no ground game (at least compared to Djokovic). Even in the 90s he was only competitive at Wimbledon. So how could he win on THIS grass? Djokovic throws himself into the return and then he has the advantage. And Ivanisevic will have to risk too much and will hit double faults.
I would much rather say Djokovic beats anyone in the 90s than they beat him today. Imagine the 1999 Wimbledon final. Yes, Sampras was great, but Agassi was only a break down in any set. Now imagine twice the player Agassi is as an opponent. Djokovic would hit the same strokes as Agassi but with movement like a madman. Even Sampras would struggle when rushing the net. With modern equipment it would become ugly for him. Remember even Hewitt beat him on grass. S&V became obsolete.
As a Federer and Sampras fan I don't like it, but it is what it is. Djokovic's game is less interesting, but unfortunately more effective.