[Cainehill]

Keep in mind that whether you choose to boost your MR might be based on whom you are going against. IE - it's nice to be able to switch back and forth; against Ulm you don't need MR; actually, Caelum you generally don't need it against either, despite them being towards the top of the heap magically. I've had ID's switching items regularly, via a scout sent along with them. Helmet changes, misc item switching ( Sometimes you want the Soulstone of the Wolves, but not against vampires, etc ).

If you can Wind Ride, you can also modify your required gear sometimes, by changing the odds that you've removed the charm-capable commander, etc.