I recently received an error in MO stating that there was an issue with Merge Plugins. It referenced Champollion and stated that Mod Organizer doesn't work with 64-bit. However, up to this point I've used Merge Plugins and the 64-bit Champollion without it providing an error. I'm a new Merge Plugins user so it's not as if I've been doing a lot of merging yet but merging has worked as far as I can tell without error the few times I have merged.
So the question is, should I be using the 64-bit Champollion with Merge Plugins/MO? Both the GamerPoets video on Merge Plugins and the recent Dirty Weasel 2016 Skyrim Modding Guide video show use of the 64-bit version.