I think a lot of the current run-up in price is speculation based on the Huobi listing and other noise. I expect that to die down a little eventually, but not enough to start any powerdowns. Generally, power-up is unidirectional to me. I don't ever expect to power down and I don't really see HIVE as money.
I suspect someone selling HIVE now might stand to at least double that stake once everything shakes out, but that's not advice; I do not give investment advice. Plus I am probably, as usual, horribly, horribly wrong about everything.
Yeah, when I power up, I also don't power down. I got some liquid HIVE from selling STEEM and use that for different things.