I have just ordered some Metal Mules today! went down to the workshop and chatted to Paul last week and he showed me his 800GS kitted out, they look good items and a nice company to deal with, they are arriving tomorrow, so very quick service.
I also liked the fact they have developed an exhaust which is slimmer and tighter to the bike so that the overall width of the panniers is only 1 meter, and that is with two 38litre panniers.
They are definitely not the cheapest and have had Zega/Touratech before which were fine, but i do think these are a little better... however, as always time and circumstance will truely tell.
Some day so soon....