To the marketing departments at Savage and Chiappa:
It's great that both of your companies are making combo guns. Savage has a classic history of building them and Chiappa has a nice looking combo gun line out there as well.
There is a need for a combo gun that will go beyond the .22/.410 chambering. Some small design and possibly materials change and you've got a combo gun that is a triple threat that shoots .22 and .410 and .45 Colt.
The gun would have to be made to withstand the higher pressures of the .45 Colt and I suppose would require some altering to the chamber. Then you'd have to decide if you wanted the barrel rifled or not. I say, have it rifled. For the sportsman like me, shooting a mix of .410 and .45 Colt a few times a year, I think the rifling would hold up for years. Not perhaps, as in a real rifle, but I don't think the shotshells would destroy it. Time would tell, and perhaps redoing the rifling might be necessary after a time.
In any event, for a survival or backpacking situation where the need might arise for something a bit more than a .410 slug, like a hot loaded Keith semi-wadcutter in .45 Colt. Something that might be useful to have in the woods.