Mobile SSO for Fiori

I have setup the SAML configuration - IdP and Sp on SAP SSO server, and Sp on Fiori server. I have shared my Sp certificate to my IdP. My Fiori link is the Launchpad. I have only skipped the HTTPS part on the SAP SSO server. ( I have followed the mobile SSO for Fiori guide with sap authenticator on SAP/SCN)

Now, few questions.

1) Is HTTPS a must for this configuration? I am working on a POC.

2) Would SSO work on URL's as well? I mean, would I be able to goto SAP SSO server URL and access Fiori applications without signing in to Fiori server? What URL should I use? Would it be the endpoint url I see on the SAML (/saml2/idp/sso? ) configuration page for Idp?

Appreciate your help. Thanks,