It also has an interesting feature called “Auto Locator“. This feature will automatically try to get the user’s current location When first visiting the website. If location found it will be saved via cookies.
Looks like the Auto-Locator is the same as GD’s Share Location Addon. So you probably can only use one of the two locators.
Not really sure for the rest, I can’t directly see any problem if you only use the GEO-my-WP for non-GD posts and pages.
But Paolo might be best placed to comment on this.
Why not try it, and let us know how it went? I would not think it can do permanent damage. Backup first or use a test installation.
To open a new support ticket, first select the relevant forum and then click the "New Post" button. Example: You need support for the core plugin? Click on Core Plugin support and click on the "New Post" Button.