Received mine from Pelican ($25 and a Porsche branded filter was installed). Today I used some JB Weld to put the magnets on them.
http://986forum.com/forums/general-discussions/60715-my-take-magnetic-oil-filter-housing.html
This weekend, they'll go on the Boxsters.
To me, this is not about chain rattle, but more the fact that the bypass valve in these is known to fail over time. An inexpensive bit of maintenance that may keep your engine healthy for a lot longer. Of course, the spin-on full flow adapter JFP mentioned is probably a better long term solution ($$$).