So you've been running full UST mtb "mostly dry" since 2004 with no flats? Verrry interesting. What's your plan if you do have a flat? Hutchinson's??
I used to carry a tube and a CO2. Theory was that if I had a flat, I'd pull the UST valve, put in teh tube and be on my way. After a few years of giving away tubes to flatted companions and never needing one myself I've stopped carrying the tube. Now I just shrug and say "good luck".
For myself, I carry a Hutchinson Tubelees Patchkit box is big enough to hold extra brake pads and retaining pin, one SRAM quicklink, and a couple of zipties too. I could use this to repair a large hole. I also have a 16g CO2 and a Huntchinson Fast'Air. If I had a puncture and stopped without losing the bead, I'd just use the Fast'Air. If I had a large hole, I'd pull one bead (or at least try to keep the other one) repair hole w patchkit, and then inflate w CO2. Fast'Air would then be my failsafe. On longer rides, I've carried more Fast'Airs and or CO2s. I wouldn't want to have just the one, because if I had trouble getting the bead on the first shot, I'd like to have a 2nd chance.
btw: I take back the no flats thing. I have had one on my DH bike. Skidded across a nail when a guy crashed in front of me on a wooden structure. Tore a 6" long gash in the tire. Nothing would have prevented that or repaired it tubes or no.
As for pressures in the D/A wheels, I am 200 lbs and just got back from a ride at 80 front 90 rear. I'm still conditioned to go for 100 psi and it feels weird to stop pumping before I get there. A few years ago, I was riding with a friend and we were talking in the parking lot as we got ready. We did a 70 mile ride. About halfway through the ride, I felt the rim touch the ground on a bump and realized that I had only pumped up the front tire. When we got back I checked, and I was only at 45 psi on the rear. I barely noticed. This ride was 50% dirt roads, btw.
I used a Fast'Air once on my first set of road tires. I got a puncture at the halfway point of a century ride. Shot in a Fast'Air and never touched the tire again until I took it off due to wear. Another cool thing about it was how slowly it went down. I heard it going "psssh" each revolution and had tons of time to pull over and fix it. The tire never even really had a chance to get very soft.
As for the Padrones, I have no opinion. If I were getting new tires today, I'd probably do just Fusion3s or Intensives (to get the extra width).
Now as far as TLR wheelsets go, all of mine have been UST. TLR rims come in different flavors. To my knowledge, there is no standard for what constitutes a TLR rim. With UST you have a sealed rim-bed and a bead of a particular shape. UST is a certification. Somebody could make a UST rim and not get it certified and it wouldn't be UST. So for example Fulcrum and Campy's 2-Way Fit rims are for all intents and purposes UST rims and can be treated as such, but are not UST certified.