Welcome Dave.
We use LMI Central, Ignition, and the Free client for the same reasons. We provision a new practice, send them an installer, and are able to join them on their machines in seconds.
Using the deployment and management tools we can selectively allow [and disable] remote access for different users and different computers in the practice.
The stand-alone ignition client is significantly faster than the web-based LMI, and that is what our support and maintenance folks use.