My setup is as follows:
campy ergo, ultegra rear, jtek, shimano hub/cassette 10 speed.

I just bought a campy wheelset/cassette with the intent that I'll be replacing my ultegra rear derailleur with a campy rear derailleur in the future.

In the meantime, I plan on using the ultegra rear d with the campy wheelset/cassette and ergos. Because the upper jockey shimano rear derailleurs float, should this still work?

Has anyone tried this out?