I recently went through selection and 3 others and i will be going out to Qatar for a meet and greet.
Understandably, information about how previous cadets are getting on is difficult to come by, however after looking into it i have contacted some of the CTC cadets out there now.
One of the big problems is the time lag when waiting for line training, however they are still payed a salary and housed well.
All in all the experience is fantastic (in my opinion), especially for a young person and has all the potential to open doors for you in the future. It is one of few schemes out there that can guarantee you some form of a salary, however with all of these MPL, there is never a 100% chance of employment. That being said, chances are a lot higher than if you went through a self funded ATPL.
Best of luck if you apply