Basically the same thing here. I just say that I run direct, end of story. Keyboards are direct, acoustic guitar is direct, so is the bass. It shouldn't be a new concept. I also don't go into the EQ being flat, or effects not needed, any of that. I figure I don't know the room, or the PA, and I'm not going to bet my life that I made the most perfect patches in the world. So I'm not going to tell the sound guy how to do his job. I say that I run direct, and they say OK. Pretty simple.
If it's a multiple set show, or if there is a break between sound check and the show, I'll talk with the sound guy during the breaks. I'll ask if the level is OK. I'll also ask, "Hey, just out of curiosity, what kind of EQ do you have on the guitar?" They like to talk shop, and if you word it right, appreciate that you show in interest in what they do. If they do EQ my channel, I'll find out how and why. I don't always have the chance to set up my patches at volume, or with a band. If they made a change, and it sounds good, I'll revisit my patches to see how I can make them better. My patches were too dark for a while. All of the sound guys were making the same adjustments to my channel. I made some slight changes to my IR's, and now all is good.