Perhaps...
It depends on field of view.
I hope Herschel will be useful in tracking SW3 during its 2011 pass.
The key detection problem as I see it is 30-75 meter dead comet pieces (carbonaceous chondrites) I don't know if even LSST will be able to handle them.
In any case NASA's budget for this was another magnificent 3.5 milllion dollars, and they
keep on trying to hand the problem off.