no pen15 jokes lol

but the biggest problem can be rounding errors ;-)

poser loves really tiny numbers and if I scale up by 10 in blender I get a "doll" (Sidney lol think vix is taller) about 1.8 metres tall

this seems to work well for mods like solidlify or cloth sims when making clothes

but if I make furniture for example I make it "RL" size then export at 0.1 sometimes needs a tweak in poser ;-) but not a lot

so much depends on your programs / working method just find what you like and stick to it