I've seen Heidii a few times, and personally I would say the OPs review feels reasonably accurate (despite the touting comments - valid or not) based on my own experience but obviously your-milage-may-vary. First time i saw her a few years ago she was carrying a lot more weight than recent visits, but has still maintained a hefty rack. Not that either shape was particualrly badly proportioned in my opinion (i prefer a few extra lbs to grab on to).
My last visit was a little over 6 months ago though so I wont post a full review. I honestley cant remember if she did OWO at the time, but she definitely did do RO "without" (as that was one reason i went to see her) which I would have though would be just as "bad" if that was something that concerned you. Penetration was definitely protected tho.
I am aiming to see her at some point in the next month or two, so will post a proper review then, and will update with some more accurate information assuming no-one else does in the mean time.