@Pigs and those who know:
In the Boro box arena, out of them all that's available now - which ones have sealed chips and which ones don't?
I think the Abyss is sealed and the VV Pulse AIO, but no idea about the others.
I'm not sure either. I know that even though the authentic Billet with its DNA 60 is supposed to be ok, I did have a problem with a juice dump in mine abut a year ago. The board went crazy after a leak so I opened up the enclosure (had to break the BB seal

) and cleaned and dried it. It's been ok ever since.
The delro is pretty safe because the board is separated from the tank on the same horizontal plane. You'd have to make a seriously bad mess to get the board wet. It can't leak through the positive pin like BBs and some other boro mods.
Like Trucker said, it's not really something to worry about if you wick your RBAs ok.
One trick when wicking new RBAs for the first time is to not fill up your boro tank. Just put enough in to test the wicking. When you're confident, you can fill her up.