I haven't tried, but I think I could also do this.
I'm also VERY proud. I am a little-titted lady, but I've put on weight and have gravity issues, so I think if I did a backwards roll, I could now do this.
My dd has sucked my nipples, so has my DH. I am the only person in this house who hasn't (although, nor has my dog...). Maybe now is my chance to try.
Sadly, I'm not keen enough to experiment and come back and report.