I've done it, once. And by that I don't mean I did it without dying, because there was plenty of that going on.
I believe I used vampiric embrace + curse weapon, but I don't remember for sure. I used fencing and a leafblade with like, 40 fire 60 cold or something, I know that. I think I soulstoned that on after getting the keys with swordsmanship. Plenty of dying involved there too.
If you've got a bit more natural skill and get timing right and everything you should be able to do it with much less effort than I had to put into it. I got a Crystalline Ring out of it though, the only one I've ever actually seen drop out of numerous runs with a guild.
I think this was just after the chivalry changes and I was still trying to get used to everything, and my suit isn't the greatest, but I got it done on my second attempt ever (eventually) so it's definitely doable.