I've worked with both Graham Mackenzie and J P Daeschler, having purchased 2 Dicksons from Graham and one from JP. In answer to your question, Steve Howell, the one from JP is indeed a bar-in-wood 16 ga. hammer gun with damascus barrels that was displayed at the Southern last year. (I did PM Steve Davis's info to you). I've visited Graham, and have passed through Dunkeld many times, but never stopped, but that was when Bob Palmer still owned Dickson. I believe Graham was refurbishing Dicksons for years before JP purchased Dickson. Now they might be competing. I have met both in the UK, would trust either one and each does excellent work. Graham still stores a Dickson for me for when I shoot driven birds in the UK.
Glad to hear that Steve Davis is doing well.