Before the Manchester Defence League jumps all over the guy for daring to suggest this might be a challenging route to make money from...it's a fair question. There have been a catalogue of failures of operators on UK regions - US, including a fair number from MAN. Of course, no one doubts the demand exists, but as ever can this demand be served profitably. Even if it can be, is it more profitable than deploying the assets (the aircraft and crew) on other routes. History tells us that this is a tough market and APD increases and fuel costs have made it tougher still. If TCX have found a way to unpick this, then that's great and let's hope they have. Virgin clearly do well on the quasi-charter to Orlando so perhaps there are similarities (but many differences too I suspect).
I don't think there's anything wrong with being sceptical and reserving judgement at this stage and I would imagine it will be the default position for many industry observers.