Yeah it's been done in summer, so I've overheard.  I would consider it too much of an uncontrollable objective hazard, but that's me.  I can vouch for the instability of at least some of the rock as I was pelted by stuff on the Sandy HW approach 2 years ago.  Might not be a bad solo objective considering how marginal many of the belays appear to be and the speed at which you must move. 
  
-Iain