I'm a quite fast typist, typing at around 120-130 WPM (on short distances obviously) when using QWERTY. This skill is lost if I switch to a new layout. I once

I'm a quite fast typist, typing at around 120-130 WPM (on short distances obviously) when using QWERTY. This skill is lost if I switch to a new layout. I once tried switching to CarpalX. I was able to get to about 80-90 WPM - it had indeed taken a few weeks, if I recall - and I pretty much hit the ceiling around that level. "Memorizing a layout in a single afternoon", or achieving 30 WPM in a week are entirely plausible scenarios, but they are not what I'd consider success stories.