it's futures based and I've seen roll costs estimated to be about 10%, though this should come down to 3-5%.
So that's bad...
It does have a "Canadian ETF" clause, meaning it can hold the Canadian ETF's to help reduce the reliance on futures, by holding existing Canadian Bitcoin ETF's that already hold spot BTC.
So that's good.
It has a management fee/expense ratio of 0.95% which is bad.
But it means anyone with access to the US markets can now safely get btc exposure, which is good.
It was the fastest ETF to $1B in assets( GLD the gold etf was the previous holder) so it's getting more attention than the old school store of value.
So that's good.
But sooner or later a spot bitcoin ETF will come out that holds BTC, which will make people run from this ETF, which is bad.
So you really need to clarify what you mean by "any good".