I have and use the H&B classic alu panniers and is very happy with it. Just like you I found very little information at HU and other places prior to purchase, though I decided to buy them anyway. No regrets. They can be put on or taken off the bike in seconds, and are excellent as table and chair when camping or having lunch at the roadside. I even use'em as centre stand when repairing a tyre etc... They are solid, waterproof, and I think they look good too.
The cons is the weight - approx 5 kilos per pannier.
I bought my set per mailorder from UK. The prices in UK and Germany are pretty much the same.
Hope this can be of any help.