Wednesday at work, a solution finally hit me for how to stow a spare tube neatly on the Torrent. Got home and got it done. The Sight doesn't allow similar due to not enough clearance between bottle cage and shock, so I've shoved one up behind the head tube.
The storage pouch and pump (got an extra bracket for the Sight) transfer over in around a minute. Easy peasy.
Yes, I know Tubolitos and CO2 canisters exist, but as I've had exactly one flat in the four years I've been running tubeless, I don't consider it to be worth spending the extra money at this time.