Originally Posted by
SFOTerry
So, let's see, could I get the ticket using this service, then ask for a VDB? Hmmmmmm...

I have used this 1K benefit before and the ticket is specifically endorsed as "this is a must ride passenger" or something to that effect and then it says "no VDB". Although, while it is not supposed to be possible, we all know how quickly and carelessly gate agents take volunteers trying to get a flight out on time so YMMV.