If you haven't seen it done, it's best not to comment on how good it actually works.
Remember the OPs question is about dealing with a frozen solid carcass that needs to be processed...your fillet knife is useless.
Either you dry to warm up the whole carcass in an open building like a garage hanging on a gambrel.....or you find the best way to quarter it up to move indoors so you can warm up to process it.
If your at a camp, chances of having a sawzall are slimmer than having a chainsaw so the idea is put forth for consideration.