[hellcamino]

The paper clip type method is best IMO and you can actually setup a switch to use so it's convenient and looks nice (if you care). The reason I say this is that when you add that adapter cable in you of course are increasing the number of connections and increasing overall resistance and potential points of failure blah blah.

The biggest reason I would say to stay away from the adapter is that the 3.3v rail runs through the 24 pin to supply power to your RAM, any hinkiness in that ckt will degrade your ability to stablize your RAM and could even cause damage.