I was there for it. Yes, it was a mostly-St. Louis crowd but I would say Philadelphia was at least a third of the crowd.
I also was there for Lefty in 1994--strong crowd of both Philadelphia and Yankee fans (Phil Rizzuto was inducted the same day)--and the epic Philadelphia takeover the following year in 1995.
In all three cases, many from Philadelphia were day-trippers.
Halladay and Thome weren't Phillies long enough to become truly beloved and Rolen's relationship with Philadelphia was--and still is--complicated (and may remain so for some time). Gillick was a front-office guy. If the likes of Rollins and/or Utley get in--they are the most-likely long-term Phillies of the more recent golden age--that might be a barometer of how Philadelphia might turn out in Cooperstown.