Hmm..a lot of great input - thanks!
Does not sound like I would use it much (don't use a mouse; I sync my Blackberry with the USB cable while it is charging, don't use VOIP.)
BUT -- it's only an extra $30, so I'll probably get it. Since the x60s don't have a trackpad, I may start using a mouse again after all these years. Can definitley see the advantage of "futureproofing" as well.
thanks!