This is a problem that has been going on with artists in Illustrator. An artist starts print project in RGB mode and uses the black swatch. And when their 2 color file goes to an offset printer, that printer says it will get 4 plates from that file. That problem is solved by starting in CMYK mode. In CMYK mode, black equals black. If the swatch the artist uses contains more than just black, the color values are used in the name of the swatch. It's not named black or a percentage of black. So if I start an illustration in Designer using the press ready preset with a cmyk color format, I, and I think many, many other designers would beleive that choosing a swatch with a name like 70% black would only have 70% black in it. And if I double click on that swatch and the CMYK sliders show that there is only 70% black in that swatch, I would be very surprised when the file i send to my printer has color I did not intend. And I was very surprised.
Yes, I can work around this because I know about it now. This is going to cause a lot of headaches for other print designers and their print shops.
I really like this application. It has changed how I do illustrations in a good way. But if I'm working in a cmyk color format I shouldn't be seeing a black that uses an RGB color format. In a CMYK "Press Ready" document, I shouldn't have an RGB black named black. Now I have to wonder what other color issues are built into a "Press Ready" document preset.