yes i understand MoI isn't the best product to design this form.
In fact, I've already modelled it in C4D (polygonal result) and i wanted to test MOI with this challenge.
For me, the best result was to draw lines in facing and project it on a taurus but i've stopped because i could not use fillet on it, etc....
I think MoI is really good for creative design without constraints but less to reproduce complexe form WITH PLAN as in my example.
Thanks.