Especially for international itineraries dealing with multiple airlines, and possibly multiple cabins, I'd rather have an e-ticket that clearly shows the baggage allowance.

The alternative of potentially having to debate an agent from a foreign airline as to why you're allowed 3 bags at 70kg on a flight that happens to only have a Y cabin while connecting the next day in J to a different airline isn't my cup of tea. The previous ticket, which might not even have the same flights, really wouldn't cut it.

This might not be an issue. Maybe the baggage information stored with the reservation is 100% accurate, and any agent readily is able to read that information. Though, it would be nice to have something that clearly states the baggage allowance.