but you still need a telehandler to load it, unless your seriously keen with a fork/shovel! A auger bucket wouldnt suit everyone but is certainly a good alternative for someone who's setup/system doesnt suit a wagon.
Currently just using a wagon and loader tractor to fill and feed out works fine. Any system would work if you make it.
For you a feeder bucket works fine as you wouldn't be feeding much blend down the feed fence? All through the oopf and robot