I never thought about an exclusive Delta owners club, but if you own one set, that should more than qualify, however owning 3 pairs might be the equivalent of a fetish.
Robsallnow its interesting that you mentioned the fitting of the present brake pads/holders to the Deltas, i looked at this combination a while ago and found that their overall height was a shade too low when compared to the Delta ones, and as such, the angle of the caliper arms were a bit too far in on the pivot line,when they contacted the rim.
For best braking with a caliper that uses a linkage system like Deltas, maximum force is realised when each caliper arm pulls into the 'meat' of its stroke, anywhere outside of this area and you will start to suffer loss of brake effect and a harder effort to create proper modulation and stopping power.
To this end i machined some thicker orbital spacers from alloy that create the same total stack height as the original Delta pad/holder and spacer.
I then remachined the new pad holders so that the integrated guides at the bottom are removed from them, then a clean up and repolish/clearcoat of the holders to keep them shiny.Once this was done i could now easily reuse the factory tyre guides.
All this time consuming work was in effect done so they could look reasonably standard at first glance, since with the factory tyre guides off of the calipers the Deltas look weird, as if a part is missing, hell yeah a part is missing.
So how does it all work with the upgraded brake shoes and bits??? VERY VERY nice, and its a hard call to tell whats stopping you now, they feel like either dual pivots or something else very efficient, unless you care to look down.