Possibly - especially if it's loading everything else except the service. I have run into issues in the past when displaying mixed content, just an FYI.
We had every intention on adding an SSL to the GIS server before deployment, but, while testing, we had to override IE's setting to allow mixed content on a desktop machine (the map service wouldn't load). Chrome was not affected - it displayed well, but testing in Safari on iOS suffered the same issue as IE, until we pushed the SSL and the service displayed.