I'm using the KPA Profiler with Main L+R to FOH. For monitoring on stage I use a solid state stereo amp and two cabinets (Main L -> Monitor out (cab off) / Main R -> Direct out). I'm not really happy with it, because there is no option to switch off the cab on the direct output section. Monitoring a "profile with a cab" over a cab again sounds really messy. 
I think a "CAB OFF" option for the direct output section is a MUST for useful stereo monitoring on stage.
An EQ for the direct output section, or the possibility to link the EQ of the monitor section to the direct output section would also be a nice feature. 