I'm sure plenty have tried the later.
But I just have a feeling I would enjoy a Fractal unit as it's more like a 'traditional' Multi FX (I know traditional and Multi FX sound a bit whack together). But a Fractal unit is more a kin to a Zoom G9 or more recently a Helix etc. I just love the look of Fractal units though and whilst I like the sound of the Kemper and the ease of ease (just load up a profile), it would be cool to nerd out a bit more with tones. On the other hand though, I could sell my Kemper and buy an amp and buy real pedals - but I have a feeling an FM9 will offer me more in a much more convenient package.
So yeah, long story short - do you like Fractal stage and have you tried an FM9?
Bonus question - when would you rather use a Kemper over a Fractal unit? And visa versa