No real issues. I've had to whitelist a few items early on, and I don't specifically recall what they were. But I've added much more to the blacklist than I've ever had to manually whitelist.

I just like that it works network wide, so it doesn't matter if I'm on my phone, desktop, laptop, etc. If you got a pi laying around (or a spare $25 to buy one), I'd say go for it. Makes for a good first RPI project if you've not messed with them that much.

Mine is pretty much set-and-forget now. I login occasionally to check for updates and that's it.