I too had a Ridley Excalibur purchased from Competitive Cyclist Bought as a frame set. I loved the ride characteristics of the bike. Very agile. Sadly I bought the wrong size and could not get it to fit me properly so sold the frame after only a few months with it.
still, while I cannot speak to the longevity, I can say it was well priced, seemed well made, and rode beautifully (for someone else anyway). Build pic below!