No, I have not tried it. Never been around when a whale is being butchered. Was offered some during the Eskimo Indian Olympics here in Fairbanks. The smell was enough to stop me.
When I was working the Muskox project on Nunavak, we found a walrus that had washed ashore. The men pulled it above the high water mark and left it. Temps were around zero so no worry about it spoiling. Two days later we were back on the south side of the island, planning to spend the night. After we finished work that day the men went to the Walrus and started butchering it. The Vetranerian I was working with, grabbed my arm and said "Rog, we need to take a walk, a long walk". I asked "Why". He said, "If we stay here they will offer you some of the raw blubber, if you eat it you will wish you could die. Our systems will not handle it, and it will make us sick". So we went for a long walk. We stayed out till most of the men had gone to bed. Luckily I was tired that night. Remember waking up to go pee, and realized how badly that dugout reeked. Near morning the gas got so bad Dan (the Vet) and I got up early along with some of the older men. We went outside and fixed breakfast. Some of the old men went to the sleds and cut off some of the Walrus meat for breakfast, and offered us some. We told them we liked our Mt House. We did try some of the meat once it was cooked. Was not bad, I think it was just the idea of watching the men eat the fat raw the night before that caused us not to want more.