No I have not tried Clay.IO
I do not want to include this in my App, as it is very messy signing into two different accounts.
On a side note, I do believe there has to be a workaround to allow Facebook integration on CocoonJS, I can't believe that it has not been integrated yet regarding how popular Ludei is with CocoonJS...
I had emailed them and asked when it may be supported, which was over a week ago, and I have not gotten a reply back.