My opinion: no! There are much better double dongs out there such as that new one I've put a link and photo to below.
I say no to this one because it's jelly and you never want to share such a porous material, plus it's harmful to your health even if you are using it alone. I have used jelly, but TPR is a safer choice and I hardly use jelly these days. I suppose if you must use this one, use condoms, but you can really find better. I know this one I'm showing is much higher priced, but that is just ONE of the nicer ones offered.