That’s a fair point, I haven’t put a whole lot of effort into that approach beyond giving up on an Inkscape plugin 
It would be nice to have an integrated solution so the affinity scripting is interesting.
For example of what I’d like to do eventually, it would be nice to drive these curves in a sane parametric way as opposed to fit by hand splines:
As much as I hate to say it…I think blender might be the ultimate solution 
Though I’ll try plasticity and maybe even just buy rhino before I resort to blender 