Is there any sort of advantage to getting it from the F-Droid repo as opposed to IzzyOnDroid? I have it from IOD and haven't encountered any sort of issues.
fdroid pulls the public source code and build it themselves. So if you trust fdroid, it avoids the threat that developer secretly inject code that is not in the public codebase while compiling apps.
However, this does not prevent fdroid person injecting code into the build. So there are a lot of arguments online about which one is more secure.