I believe so yes. You could always just create a new account to get yourself a free month's worth of GOLD. By the time that runs out the PC version will be close to getting released, too.
EDIT: Also it should be clarified that it's the summoning/invasion stuff that's inaccessible as a SILVER member -- which is still a big deal, but I figured it'd be worth pointing out all the same. I think that's how it goes anywhoo... I'm pretty sure that's how it was in the original Dark Souls least.