http://www.cullmann-foto.de/english/html/produkte/stative/spezial/2702.html

Curious to know if it can replace a stabilizer.

It looks like a nice/simple product that'll get the job done. (This is a stabilizing device.)

I'd look for something that stays on your shoulder, not on the belly!
If you're a woman, you're used to breath using the upper part of your longs, so this system might be good for you. Otherwise... I wouldn't bother!
And it has a "2.5 cm" load capacity. That's nice! :-)