Interesting. Do you have a link for more info?
The first thing that comes to mind is there appears to be a significant drag penalty when the tank is loaded.
Secondly can you do split drops? The Isolair I ran for several years on an Astar allowed split drops, partial drops, and and variable flow rate on both doors. This system appears to be all or nothing a la Bambi where your drop pattern options are limited to airspeed and altitude variations