I have about a half dozen knives from the Boker Plus line, both folders and a fixed blade. I don't have an Excalibur, but the last one I bought was a Vox Rhino in stag.
As far as folders I have an Epicenter and a few smaller button lock folders from the elegance line. Most of their knives in the plus series use good materials like carbon fiber, titanium, etc. And the 440C they use is fine for my applications ( I still consider 440C to be good steel so it's not a negative)
I've been satisfied with the fit and finish of all of them. Also on the knives I've bought, the blades all have a nice satin finish that gives them a custom look. IMO they look more expensive than they cost.
I'm going to be getting the mini Vanquish soon, the specs look good on that one too.