[Vanseb]

Hi,
Here my short experience with a Musashi on a 4870.

The cooler can rotate, of course, accentuated due to the fact I have a SFF case, so the card is "vertical". The cooler can rotate on the X axis, but I think that's not a big problem.
If I look at the past, the VF700 could rotate too (not as the Musashi, I admit), not with the screw and holes, but throught the fix coverslip. But I didn't saw any report about that.
Same problem with some waterblocs, like Alphacool models for CPU. It rotates a lot due to the one screw who's used to block it.

I don't have problem with temp, even if I rotate the Musashi and block it to have an other position. I think the problem of higher temps since the Musashi rotates is with thermal grease. Maybe there's to much, or to less, and when it rotates, the "configuration" changes.