Pro Sites + Really Simple SSL

Is there an easy way to force https just on the root domain and force http on all subdomains?

I have 1 SSL Cert on a Root Domain but don’t have a wildcard SSL cert for the subdomains. I intend to just have https on the root domain (to secure Pro Sites/Stripe checkout) and keep all subdomains created with Pro Sites as regular http.

Steps
1) Install SSL Cert on Root Domain (exampledomain.com)
2) Install and enable WPMU Pro Sites
3) Install and enable Really Simple SSL on Root Domain (exampledomain.com)
4) Register a new subdomain site via Pro Sites (examplesubdomain.exampledomain.com)

Behavior
– The automated wordpress new site registration email sent out on creation of the new subdomain site shows https://examplesubdomain.exampledomain.com instead of http. This causes the user to freak out when they get a “Your connection is not private” warning in Chrome when they click on the link
– When logged in as Network Admin and you click “Update Network” (https://example.com/wp-admin/network/upgrade.php) none of the subdomains are updated since wordpress prepends https to all subdomains.

Is there an easy way to force https just on the root domain and force http on all subdomains?

------------------------

Test 1: Create a new subdomain site in the Pro Sites Checkout Page and notice how Pro Sites "Finalizing Site... " Page shows "https" instead of http for the new site

Test 2: Click on "Upgrade Network" and notice how none of the subdomains are updated since wordpress prepends https to every site. https://exampledomain.com/wp-admin/network/upgrade.php