OMG, Neil, you raucous man! That is kind of hilarious that you started that man's newspaper on fire, LOL!
Loved the article. Tony and I are rebuilding our small pond into a larger mostly waterfall/small pond. On Tony's suggestion, we are creating a Louis XIV garden in it... leaving openings in the rocks to place potted plants which can be changed out and over wintered inside. The native rock that we are using (and that we gathered multiple carloads of today... will be aching tomorrow) look very much like the rocks in the sempervivum photos... so now I want all those miriad of plants in and around our waterfall garden! I need a bigger budget...