Ideally there'd be a sleeper service so I could maybe do a little work in the evening, travel overnight, have a relaxed breakfast arriving ready for a full day. To me that's miles ahead of getting up 5 hours early with all the mucking about of getting there, checkin, baggage and what not involved in air travel, and almost as ridiculous on arrival.

Personally I've never had issue working on trains, and the many friends who use trains regularly seem to do work well enough too.