I don't really understand the discussion - whether poser calls V4 194cm or 181cm is irrelevant - to fit it nicely in the poser scaling universe, you just scale the figure to match the unit.

The only place where it matters is in things like furniture, architecture and vehicles. But you can scale those as well and you have to do some sort of scaling for most props anyway since most of them vary in the actual scale they are imported in poser.

Scaling an entire set of props proportionally is not difficult - parent them to a null figure and scale the figure. (or use the grouping prop in P9)

Just my 2 cents