It's a nice piece of gear. I enjoy my 432 but at the same time my friend has a
GW box and also a shoebox with foam to carry his minis in. I've also seen duffel bags filled with models in old vehicle boxes. It comes down to spending the money for
any carry system (Battlefoam,
GW, Sabol, etc.) or spending the time to make your own.
I personally would rather throw the extra money down on a premade bag/foam. I'd like to spend my time converting/painting my models than spend it making a bag and foam trays. Then re-fixing it when I mess it up

Right now I don't have the extra cash so most of my unpainted minis get carried around in ziplock baggies until I can get them foam trays.