We were lucky enough to have seen the tour on AirBnb. Lucky for a few reasons, that they were open in December and we were the only tourists/visitors there that morning. The gentleman (I'm bad with names anyway, especially after the fact) walking us through the tour was delightful, and answered all of our questions and took all the time needed to explain everything. It was really insightful, and was a great introduction into Armagnac and that process.
The tasting afterwards was wonderful. We took the time with the different wines, and one of the Armagnacs they offer. We enjoyed doing this at a smaller vineyard and I'm glad we waited until this trip to do a tasting.
I would definitely recommend visiting, and arranging for a tour or tasting if possible.