Today I profiled my Koch StudioTone via the inbuilt loadbox and direct out.
First:
The profiles sound THIS close to the output of the loadbox regardless if I profile the clean channel, overdrive or overdrive plus - it was spot on all the time.
Second:
The profiles sound quite nice - when I switched cabinets to use some real cab's it sounded strange - maybe I am just used to the DI sound - I'll check it again tomorrow