All 2 piece pulleys are NOT made by the same manufacturer.
Yes, if I had a pulley fail while on a tour, I would change it on the side of the road if it was a 2 piece and I had a spare with me.
A few years ago, one of the participants of a tour in Utah changed a head gasket on the side of the road.
Changing a 2 piece pulley would be simpler than a head gasket but you better have a GOOD wrench for the crank ratchet bolt.
My opinion,
Chris W.