It saves time. I don't have a mysterious skin condition, however I don't care to explain myself either.

[The robots are starting to become more frequent, and Vastra's watching them rather intently. And it looks like there's some sort of structure coming up on the horizon as well.]

...I suspect stowing a rabbit in a hat would destroy a perfectly good hat. [She shakes her head lightly. The cold is starting to make her slow.]