It's something different, but the slider phones always seemed to have problems. I hope they don't have any design flaws that would cause the slider to break.
I'm waiting for an updated AMD C/Z series APU and I think I like the transformer approach more. I have an Iconia W500, which is a cheesy c-50 transformer like tablet, but once someone (asus) puts these two things together I will gladly throw money at them.