As Hippy says - I've also done both.
I took two on TCR and it was a godsend when I went for a shit in the bushes in Italy and got loads of really sharp hayseeds in the pad - unwearable. I meant to take two on IndyPac but forgot the second pair and managed fine. Shorts are pretty bulky so it's tempting to avoid taking a spare. But if you have room, why not.
As Hippy says - I've also done both.
I took two on TCR and it was a godsend when I went for a shit in the bushes in Italy and got loads of really sharp hayseeds in the pad - unwearable. I meant to take two on IndyPac but forgot the second pair and managed fine. Shorts are pretty bulky so it's tempting to avoid taking a spare. But if you have room, why not.