I see two main benefits of a takedown and/or switch barrel rifles.

1. Ease of travel. How easy is it to break a double rifle and halve it in size for travel on planes, through airports, when staying at hotels, touring etc.

Same for a takedown style rifle.

Less people know what you are carrying and it can even be fitted into a standard hard suitcase, or shotgun sized hard casein a duffel bag.

2. The One Gun Man is deadly. But it is so more versatile to have several calibres for different purposes. But even with some weight and balance changes, shooting the one setup with the same style scope etc creates great familiarity.

3. Third benefit for Europeans which limit the number of rifles but not the number of calibres/barrels is obvious.

As for the argument, which calibre will you choose to hunt with on the day, you may always have the wrong one? And it will be too hard to switch your barrel from hunt to hunt? Well yes of course it is too hard to switch barrels continually. Hunt with the one which best covers the lot.

My ambition is to have a switch barrel/takedown setup in 6.5x68, 8x68S and 9.3x64. If it was a Blaser the .222 could be added as well, and hell it would become as familiar as the back of my hand.

A classic combination would be .300 H&H Mag, and .375 H&H Mag.

If hunting Africa and DG is on the menu, one would just carry the .375 or 9.3 for everything. If not hunting PG the .300 or 8mm would do quite well as well if preferred.

My only existing multiple combo unit is a 9.3x74R double Valmet/Tikka, with 12 g U/O barrels but soon will have 12g/.223 and 12g/7x65R combos and .30-06 U/O DR barrel sets as well.