x-button 1.5 question

[kannaguchio]

My first experience with it was as the task manager in the new 3.35 ROM. I especially liked how I could set it to "tap X to close program" and it wouldn't crash the phone when I closed the Programs or Settings folders. Having moved to NueROM I'd like to know if there is a version of 1.5 that has the same functionality, or if there is a way to make it so that is the case.