QUOTE(hitster @ Jan 9 2008, 03:30 PM)

If they are a standby performer for specific roles, surely that would make them a Swing or does the "Swing" definition only apply to covering the ensemble. In plays, an actor/actress will often cover only one role as an understudy if the role requires an actor or actress of an age range that none of the other cast or understudies can play like say older man or woman.
The difference being that no matter how many roles the Walking Cover is covering, they are not onstage unless they are covering that role on any given night. An understudy will have a part or ensemble role of his/her own, a swing will be covering ensemble roles and in a large cast show means they'd probably be on more often than not. But a budget will dictate that producers would keep the number of walking covers to a minimum, thus they could indeed cover a variety of roles. Therefore they could be cast in the middle of the age range, or as I have sometimes seen, the wrong age, and the audience just has to buy it... it doesn't always work. But in a small cast play, there need to be understudies and sometimes it is the only way. The other thing is that a walking cover may well be able to go home early, so although often I expect frustrating for an actor, it probably has its perks!