Everything said is true. Paul is a great guy (only spent an hour or two on the phone with the man, but would consider him family). His cables sound great. His cables taught me what "fleshed out" means. Great inner detail, extended and airy highs. Bass wasn't as strong as some 10 gauge copper cables but...
I ended up going with Signal Cables Silver Resolution because they cost less and had better bass extension, at the cost of some inner detail and high end sparkle and air. I honestly may try Clear Day cables again someday, and I will more than likely be wiring my speakers (internally, from the crossover to the drivers) with Clear Day cables; my tweeters are definitely getting Clear Day cables.
I have not heard the harshness people talk about with silver cables, and I don't like bright sounding systems.
The first thing you will notice is that they are a small gauge (especially the single shotguns) and are light weight, the second thing you'll notice is how good they sound.