On the condition of GWM miniatures - same goes for Perry. I guess it's the same caster.
Just received today an order of Perry "Sudan" sailors: identical codes in both card boxes and clamshell blisters. The figures in blisters have definitely suffered more bending of bayonets, as they are free to move.
A foam insert as in traditional blisters would surely reduce movement and hopefully damage. I never throw away the foam pads, but recycle them for packing***, so it's not an environmental issue for me. But I wonder: is there a "green" equivalent for that sort of foam sheet, in the same way there are now biodegradable foam "peanuts" for packing?
***You can accumulate a startling quantity of foam bits over thirty years of figure collecting...
Allen