I'm in no way an expert of even well experienced with DRs. But my first was a Searcy in 470. All it did was go bang when I pulled the front trigger and then again when I pulled the left. When I opened the action which was not difficult but solid, the extractors did their job. With the load I used per Butch's input the 500gr A-Frames gave great accuracy when I did my job.
I only traded it recently for a new Chapuis because there were things I wanted in a double that it didn't have (ejectors, shorter LOP, setup for a sling). As far as I knew there was nothing wrong with that rifle. I took the rifle to Butch to have him mill the rail to accept a Trijicon RMR sight and he did great with that. While there he was a very nice gent who gave me a tour of his shop, showed off a few guns he was working on and generally just a pleasant guy to be around.
Would I buy one again? I'm not sure. As mentioned he is older now and I'm not sure how much longer he will be in the business. As such, I would want to make sure someone out there will be able and willing to service the rifle if needed. JJ certainly would be able, but he himself is winding down in how much business he's accepting as he gets older.