Don't pay the least bit of attention to naysayers on the steel box.
When I go to the range with BP or modern guns, it LOOKS like I am moving in. I have a HUGE plastic fishing tackle box for the "small stuff," AND two of the large plastic Tote Boxes filled with everything else I need or may need, including targets, gun rests, spotting scope, spare parts, tools and a small portable vise. I actually bring this stuff to the area behind the shooting bench with a hand truck! Yes, I have gotten comments over the years, but funny how I get asked to borrow something someone else forgot almost every time I am at the range. Or I sometimes wind up fixing something for someone else at the range. I sometimes bring my "Main" Kennedy Tool Chest as well.
Bottom line, bring and use what works for you and forget about the comments.
Gus