jtr Not sure what stories you have heard re SIA fuel policy, I've seen several people on PPRuNe suggesting it is 'tight', is that what you heard? If so I'm afraid someone has been telling you large porky pies!
Ask the majority of the ex BA, QF and CX pilots who have flown the B744 with SIA and they will tell you it is a most generous policy. Even then, in ten years on the a/c if ever I felt I needed more fuel I took it and my decision was never questioned once.