Just to be clear here. This isn't a keyshot workaround. This is a Photoshop workaround. Adobe is the one screwing this one up, Not Luxion. It probably seems like I give them a hard time often enough, so wanted to stick up for them when I saw that.
you need the same plugin to open them from blender, which holds a Bunch more information that keyshot, like cryptomatte!!! BTW cryptomatte isn't All that great in photoshop even when you have it there becasause DOF doesn't actually work like it does in the native software.