Using kemper with AER acoustic guitar amp.

I tested the AER (60 I think) once and didn't like it.
It sounded harsh and boxy to me.

In general, bass-, acoustic- and keyboard amps can be profitable used with the Profiler. Of course each of them presents its sonic signature, which can be appreciated or not.
I'd advise you to try before buying, since no-one will be able to tell if you'll like it.

I wanted to do the same with a Fishman Loudbox Performer acoustic amp and asked in a email if this could damage the amp.
"Fishman" confirmed that acoustic Amps were ment for use with acoustic guitars en/or vocal stuff and not for other use, like a Kemper.
Didn't sound bad to me but I didn't want to take the risk.

There would be no risks, really, apart from overloading the amp as any other one.