We have a tetra snuggle bed and we use it all the time, but there is no way it would fit between DP and I in bed.

I use it in DS cot as well as in the portacot just to make him more secure. At the moment DP is away for work, so I am using it in our bed so he is next to me. My SIL also uses hers in the lounge on the couch, and also on a rug outside when the weather is good.