Yes. PKI certs are PKI certs are PKI certs -- there is no difference based upon who issued them -- except cost, ability to easily deploy them, and ability to easily renew them. These three factors are huge because implementing HTTPS
client communication in ConfigMgr requires every client that will be using HTTPS to have its own unique client authentication certificate. As noted, this will get expensive quickly and will be painful to deploy and maintain going forward.
Jason | http://blog.configmgrftw.com | @jasonsandys