Yes, it is possible. I do this all the time when performing live, I have my Kemper case standing up on it's closed back cover.
I have added a patch bay to have all my connections up front and if it starts to rain I just place my front cover over it
At home I put it next to my desk as on the picture. The second rack is just for my in-ear system which is connected to a rack line mixer. This way, I put my Kemper signal in this mixer and receive a signal from the mixing desk with all bandmembers (without my own signal) so that I can adjust my own signal .