The "standard " configuration ends up a messy disaster of hoses sticking off your gear.long hose is a more comfortable configuration, with better air sharing potential, less entanglement hazards, and sets a diver up for familiarity going forward into more advanced classes.
This statement is simply not true and is only a matter of the care with with each configuration is accomplished. I dive both ways and my hoses are not a mess either way. It is easy to make a statement that categorizes all of something one way or another. if your hoses are a mess, then un-mess them. You can route the hoses basically the same way and from the same ports. Just you do not have the mess of tucking a long hose and then the mess of wrapping it around, just a simple octo second on a long hose on a slip release bungee necklace. How is that a mess?
The other gent asked a question, which seems to have raised some ire, as it always does by the long hose proponents. It was asked why? How does which hose you breath create messiness of itself? The why is part of the should and how. If the why is the OP is intending to do penetration, deco diving and similar tech pursuits sooner than later then he should go long hose primary and the how, there is plenty on that. If not then he could certainly optimize his current rig to un-mess it if that is the case.
The regulator set below which is an excellent value could be set up either way and they even offer a yellow face plate if so desired, the only difference (between long or short hose primary) is which second stage gets the bungee necklace and which is breathed. It is not inherently more messy one way or the other.
Having a clean rig is a matter of routing, a good first stage design that contributes to that end and thought into how the equipment is stayed.
You like the long hose rig, okay, I do too.
N