I'm no expert and haven't used the stuff. But can tell you why I haven't tried it, mainly cost and weight. In large quantities $400 per ton. I suspect the weight will be about twice my organic mix. Maybe I could use pots half as big, not sure.

I'm getting about 4-5 years without repotting on fruit trees and longer on blueberries. Three to seven fruit crops without repotting. This is with a coarse organic mix with good drainage. After that long I prefer to start another tree in a new mix. Repotting is extremely hard on my back. My plan is to start with new rootstock, T bud the same spring, and have fruit in year three.

If you want to hear from Turface proponents go to the container forum. It is very good material if it works for your wallet and setup. I think it is mainly used be itself. If mixed with soil or organics they can clog the pores and negate it's big advantage, great drainage.

My understanding is that it needs frequent watering. But I could be wrong.

I have used it in conjunction with coarse perlite and shredded pine for a few different fruits, mostly figs. The growth for me was outstanding. The only drawback is cost of turface and the weight. As the pots get bigger needless to say the weight goes up. I especially like it for rooting figs. At 60% perlite and 40% turface, the cuttings stay moist not wet and have good aeration.