I really think people are making this more of an issue than it is. Equipment in your gearsets won't take up inventory space, period, and we'll have at least one gearset per class/job.

I don't know about you, but my equipment takes up around half of my inventory space at all times, and I don't even have every class/job. Gearsets will go a long way to relieve the inventory reduction.

Gearsets and the inventory reduction will more or less balance each other out, the only real difference is that gear won't clutter your inventory so heavily anymore.