I'm little worried about the knobs sticking out from the kemper rack. One solution would be to build a rack with recessed rack strips, but I would like to know is there some kind of protection guards that you could attach with rack skrews? Something like in the picture but with mounting with rack skrews.
[Blocked Image: http://www.gearnews.de/wp-content/uploads/2015/06/Line6_Helix_Rack.jpg]