Well just to close this thread off, for the benefit of anyone who stumbles upon it in the future.
I did buy the amp, and very nice it is too. For my "playing" it sounds best just all flat with the gain set high and the volume low - it just sounds natural and smooth. The controls encourage a of experiment to get variations to taste, but clean works for me. It's capable of going much too loud for use at home, so should be fine for coffee shop. And I discovered that line in not only has separate volume but feeds the speaker/headphones and not the DI out. The DI is post eq but pre volume. Which means one box could triple duty as a foldback monitor, amp, and DI in some situations.
Very pleased and thank you @xzodar.
Rich