Being able to process on an ipad would be really nice, but there's a lot of "if's".
I would love to try it, but i'm afraid drawing with a finger would be even less precise then a mouse. And this is the purpose when you want to go for a tablet, you want to be more precise. So a pen would be needed. Standard stylus wouldnt work with Ipads.
Also, i'm concerned about the graphic processor; not the processor itself. Would it run LR smoothly? Time will tell.
And one last thing, storage could be an issue. I say "could" because I wouldnt be surprised to see a GIGA format of Ipad3 being part of the lineup; like a 256go.
So while we're waiting for the Ipad3 announcement, I think i'll try a Wacom tablet and see if a tablet is for me first.