I use my Kemper for playing live and in the (home)studio.
I have trouble making a good profile of my tube-amp, that has a typical fat Chicago blues sound. I didn't find that sound ether in the rigs of others.
But .... I usually don't need that sound while playing the harmonica. I created my own sound with the Kemper and I nearly always use it.
You can listen to my band here: Mississippi Kings - Winter harvest.
I will not be very active on the forum, I simply don't have the time. But now you know that playing harmonica can be done with the Kemper