Once extension support is added it'll be really great. I still think it needs a little work there are times it is unresponsive and just closes itself. Other than that I really like it and the UI is great.
I have experienced the sudden freezes a couple times but I kinda attribute that to my hardware. This is a crappy laptop with a CPU that clocks about 1.1 GHz lower than my cell phone. Working on installing it on my beefier gaming rig right now.