OH no, I totally run with pedals man. I have a pedalboard hitting pretty much the front of the amp and it sounds great. I have an HX Effects pedal and a Digitech Whammy. The Kemper can't do everything LOL. Everything will be working together via MIDI, using a Selah Effects pedal. It's amazing.
But I've pretty much decided that I'm going to use Kemper's delays and reverbs. Nothing can beat them IMO.
It's pretty much a dream setup for me!