I still use my real pedals with the Kemper, they sound better than the built in stomps (Including the new Kemper Drive stomps).
I disagree with 'The Kemper is all I need', as when I use the profiled amps more overdriven they sound very different to my real stomps in the send/return stage. I can just dial in my favourite types of sounds with my HBE Power Screamer, or Fulltone OCD.
If I don't use my real stomps, I find myself looking for 'that' sound for too long.
Saying that if I did play at loud volume levels, which I don't, the gain of the real stomps would be turned right down to compensate, therefore I am really only using them as a preamp stage.
For reference I only ever use the MBritt Dumble ODS profile, and have done for years now.
Maybe I should just buy a Dumble ODS...