bigbulls,
Why not take the ribs after you get all of the other meat off?
Especially if one is deboning for the pack out job, then yes the rib meat is all right there for the taking before you flip them over to do the other side.
If one is interested in the whole gambit of: cuts with the ribs still in the meat, and/or the heart, liver, etc., then I would recommend the standard field dressing method. In that case, perhaps the "can opener device" ["new field dressing tool" thread] would be a good pound or two extra to carry [or in our case, let the horse carry it].
Personally, we've "played around" with the rib meat thing and net, net bottom line for us it is a big "no thanks". We kinda feel the state of Colorado had it about right in what they put into the regulations as to what cuts you had to harvest and which you could leave.
Good Luck and Good Hunting,
EKM