I was thinking the same thing - there's NO room between the dog house and the chair for me to swing a leg thru on ours. If I slide the seat alllllll of the way back, then I can get thru.
I assume the swivel chair would need the same treatment, I'd have to move the chairs all the way back before swiveling.
I, too, was wondering how this is physically possible. If anyone has done this on a recent model Greyhawk or Redhawk, I'd love to see some pictures of how well it works.