Verizon spokesperson Jeffery Nelson has confirmed that fixes for its LTE modems are in the works in order to address handoff issues related to moving from an LTE coverage area to an EVDO area, with users reporting handoffs taking up to 2-3 minutes to register on hardware. In other news, drivers for Mac OS X have been confirmed to be in development, with a release targeted for the next few weeks.
If you have a Verizon UML290 USB modem, you can get it working on Mac by following these steps:
http://www.4ginfo.com/index.php/tip-of-the-week-70-configure-verizon-uml290-usb-for-use-on-mac-computers.html