Setting Skype as The Default Dialer on Nexus 5 These two posts, Setting Default Dialer and Setting Nexus Custom Dialer, make it seem straight forward, but it is not.

I am not prompted to choose which dialer to use, it only uses Google Dialer

Neither the Phone nor the Google Dialer apps have defaults set, thus the clear defaults button is not enabled.

I consider myself tech savvy and have already spent half an hour trying to figure this out. Unacceptable for something that should be easy.
The answer, after spending considerable time in Nexus and Skype chat support is that Skype does not provide dialer support for Nexus 5 KitKat. Unsure if other manufacturers using  KitKat have the same issue or have delivered a solution.

I was told by Nexus support I could contact LG for a possible solution, but that the change could void my warranty.

The worst part is that this is not obvious from a Google search. Nothing at all on either sites. Support acts like they don't know. Nexus support would not answer the simple straight forward question, can Skype be a dialer.

I find it hard to believe that both companies are not fully aware that this is the situation. The customer suffers. What exactly does poor android support gain Skype? They just had to refund my prepaid year and lost an opportunity for a lifetime revenue stream....