I prefer gil. People are niggardly with their shards, but tend to undervalue gold.
Honestly, I think that the only reason they are withholding shards right now, is because they need to level. Once people obtain a high enough skill that they no longer value shards as more important than gold, then I think it will calm down.
It's like every other game when something new happens. A patch, or addition of new content. Whatever is needed for that content/craft is inflated in price, and then after a couple months it goes back to normal. It's just that, on launch, it's every single thing in the game. And what does every single thing in the game need right now? Shards and Crystals.
Without an auction house, it's going to take a lot longer to calm it down. There's only so many people you want to sift through their 'browse' for, to find that item... Eventually you just give up and go level a craft to do it yourself :) I say, we wait to see what happens, and the LS' that build their own gear, are the ones that are going to be better off later on.