LOL.
I do not own a Eurotard (nor would I want to) nor Spanx. But I did buy a knock-off Spanx type garment which goes from my knees to the bottom of my bazooms.
The first time I put it on, I began hyperventilating. It feels very much like you are in the intimate grasp of a python. I have never been able to wear it. Far from making me feel slimmer, it feels like I have added inches to my girth. I can't figure it out. The minute I try getting into that thing, I feel a panic attack coming on.