Does sharing torpedo storage improve Astute's weapon flexibility?

Does omitting VLS allow a more variable weapon fit for each mission?

The objection is that Tomahawks displace torpedoes from the shared magazine, while separate VLS cells would preserve torpedo storage.

Using the same magazine for torpedoes and Tomahawks forces a choice between the two loads. Every cruise missile carried takes space that could otherwise hold a torpedo. Separate VLS cells would keep the land-attack missiles outside that shared storage. The example of forty torpedoes versus ten torpedoes and thirty Tomahawks illustrates the tradeoff, rather than establishing a particular operational load.