The high temp paint works fine, but the top of the stand will get marred over time, simply due to moving the kettles on and off. The paint on the top will cure after a brew session, or just heating some water in a kettle to get the paint up to 600°. It will get that hot, by the way, so tell people to be careful not to touch it while your brewing.
I've had no paint chip off my stand, only wear a bit where the kettles sit. After I cured the top of my frame, I added a few more coats of paint and heated the same way. I even sprayed some on while it was hot. Worked fine for me.