The main thing is...its fast!! You can change layers, go to routes, view records and it happens. No line. No waiting. Alt Schwartz has been a great help making it easier to use.
Much better than the Salesforce1 integration. However, still missing some of the features that I user regularly. Missing ability to only show markers in a defined shape layer (very useful for filtering markers into a geographic area). No ability to save or export the results of a 'search'. However, this is a big improvement on the way I've been trying to access the functionality on mobile devices. App also scales nicely for tablet use.
Would not allow Community logon