Hi Paul,
thanks for the feedback, it's much appreciated.
I've seen some US-made cabinets with the ceiling mounted hangers here
http://www.guitarcollectorshowcase.com/- a more elegant solution I agree. If we'd had a bigger budget to play with I would've liked to source something like that or have it made. The hanging rail was the part of the client's brief, and the customer is king!
I think I would prefer glass sides on the cabinet too.
As to price, you're looking at about £2,000 for something like that, give or take a few ifs and buts.
Hope to have more to post in the future!
All the best,
Jim
PS, I've just been over to see your guitar wardrobe - a good solution. Those hangers look exactly like what I was thinking of! Wish I'd seen 'em sooner.