I've heard people talking about Glue and how they're disappointed that it doesn't do clash detection in the same manner as Navisworks Manage. It doesn't have the robust reporting and clash management/tracking capabilities that Navisworks Manage has. I think this stems from the misconception they have that Glue is supposed to be sort of a "Navisworks Light" for mobile applications.
It's not. Not even close - and it's not intended to be. So... just what IS it for?
BIM 360 Glue is an on-line collaboration tool that allows for multiple design team members to access the same model (meaning the same version of the same model) at the same time to ensure that everyone is working from the most current project information. The following graphic illustrates the difference between working in a traditional fashion where multiple participants are submitting updates at different times (to Navisworks, for example) and therefore working on different versions of the model and BIM 360 Glue, which allows for simultaneous collaboration on the same model version.
In the traditional workflow on the left, different team members post different versions of their models at different times, and the BIM Manager or Model Manager will update the composite Navisworks model periodically. It's a much more linear process, which means that most of the time the models are somewhat out of sync. In the Glue work flow on the right whenever a team member updates the model, all other team members have immediate access to it, since it's all happening in the cloud. When you access the model in Glue, you are always getting the latest version of all components.
While Glue is most decidedly NOT a "Navisworks Light", there is a rather cool way to use Glue as a complementary tool with Navisworks however. Thomas Schwaiger of the Autodesk BIM 360 team lays out several workflows for using Navisworks and Glue 360 together in a post he recently made on the Beyond Design blog. You can read about it here.