fabric pots are great for growing, but they don't look as good as other pots, which usually doesn't matter anyway. Need to be filled properly, can't partially fill them like a solid pot or they fold in.
growing katuk, ginger, turmeric, galangal, and purple potatoes in them, along with a few others, and they are all doing fine.
haven't noticed any root bound plants. roots will sometimes grow through the bottom, but they are super thin and the pots are easily moved, ripping them away with little resistance. I've had roots grow through plastic root pruning pots as well, but they tend to be larger in diameter.