I had my first sleeper experience recently and was very impressed. It was comfortable and I slept pretty well. The point about journey time is irrelevant - sleeping while travelling is actually an efficient use of time. I arrived feeling much fresher than after getting up at an obscene hour of the morning and dashing to an airport. For business travellers the price is not so critical if other factors are favourable.
If it's done right, I could see a revamped Caledonian sleeper being popular and successful. I wish it good luck!
Indeed - I'm looking forward to using it for the first time in October, when I need to be in Windsor by 9 am on a Monday morning. Even the earliest train from NCL on the Monday wouldn't get me there in time, not that I have the slightest desire to get up in the middle of the night for a train or plane either, so instead of going on the Sunday and booking a hotel, I'm going up to Edinburgh and catching the lowland sleeper, which will get me to London nicely in time.
Apart from the total cost being cheaper, I can leave NCL later on the Sunday than if I was going to London.