I'm a developer at a small software company starting to use Flex. I'd really love to be able to use the chart features of flex builder 3 professional, but it's a hard sell to the bosses to buy the 4 or 5 licenses we'd need. Would we be able to buy 1 professional license along with standard editions for the other employees, or are we required to have a professional license for everybody? If we can get by on 1 pro, what would the other IDE's show? A watermarked version of the chart?
I believe your assumption is the case. That's the way it is for other development software. And I believe you are right about the watermark, if you don't have the license, you get the watermark.