I've only seen a guy with 2 penises once in a porno movie.  But they were so close together he could only double penetrate.
But yes, I've heard that also, two condoms worn at the same time creates friction which causes them both to pop.  One condom with extra lubrication might be better.  Trojan condoms I hear rarely break.  Durex which are thinner break more often, and lifestyles are somewhere in the middle.  Although you might be tempted, don't try to spin her around like a pinwheel.