>>11644373>>11644377No, the hip is a straight bar. Also I just checked my Skele-Megs and I don't think it's supposed to be a drop down hip. One side goes, but the other is totally locked. I think it might be an unintentional quirk of assembly. Happy to be wrong on that though.
As you can see in this picture shoulder armour is on a ball-joint. It has a lot of mobility and can get out of the way of the arm.
As for part-swapping if there is some specific characters you want to see (and I own the figure) let me know and I'll try to make that happen latter as I need to go out now.