I loaded 4.5 on a USB stick for my Raptor after backing up and it is working very well. The time is finally set from the internet upon booting up when I set it to do so in the plugin.
The only gotchas I can find so far is you should never load the "fix" plugins--expecially the jpeg fix-- from the plugins feed. Upon reboot it will be stuck trying to boot E2 over and over. The other fix is not needed anyway.