From what I understand Tarny, the Scion has a very good recharge rate and impressively high flow even at low pressure. It's recharge is no doubt streets ahead of your AIR at the lower pressure that the newer angels and shockers prefer so you are unlikely to get any shoot down at high ROF.
As far as ease of use, much easier than the AIR in my opinion. Unlike the AIR once you have set your output pressure there is no need to keep winding it in and out messing up settings to turn it off. When you want it off then you just push the off button, much simpler and doesn't require an allen key.