The interface on the website for scheduling meetings and events is very similar, but at the moment only meetings can be scheduled via Outlook. Most of our meetings are created directly in Outlook. We've set up custom training and workflows on how to schedule events in the Classic Event Center and this question has come up multiple times as it will help streamline the process.
This will also address the issue of attendees/panelists not realizing they have to open and accept a calendar attachment on an email invitation for an event. This is especially true for people outside of our organization.