Do you mean both feathers on the same fly/kebari? Or just different examples with different types of feathers?
There are tons of examples of them using one or the other. Have you seen Yoshikazu-san’s website? It’s an amazing resource (other resources can be found here ). You may also want to take a look at @todoroki34 - san’s blog Kebari and Fly, another place you can spend hours looking at. Many other people have examples too. @dwalker has given lots of search terms for kebari (amongst other things) in many different posts here.