I have used a Baby Bjorn (given to me) with Indah & had no problems, also able to get her out of baby bjorn (until a month or 2 ago) without waking & then popping her in her cot...
I am currently borrowing a hAB from a Wonderfully, gorgeous, generous BB lady... Then I am l;ooking at investing in one... So far with my practice last night it all worked well & Indah seemed really happy in there!!!!