Actually BRL has mentioned this career method for getting the dosh together for flying. (He is a train driver)
There is overtime as well ontop of the basic .
So as you are being paid to train i think it would be worth thinking about if you are struggling to raise cash. Save cash while hour building and ATPL studying.
As well if you have worked in the transport indusrty before on ****ty shifts its something else on your CV which sets you apart from the rest.
MJ