I have asked this exact question at a Studio One event here in Germany to Arnd Kaiser himself about two years ago, because I too love the Slicer in FL Studio and the way you can rearrange slices on the fly, which can not be recreated with Presence XT or SampleOne XT. He seemed a bit confused and didn't understand why one would really need this. Now that Steinberg have updated the Cubase Sampler track with this exact feature, I wonder if Presonus are going to think about this again. It certainly made me buy a Cubase license for the first time in my life!