Maybe I contributed to some confusion here.
When BD's Epic Malibu failed, it was not about just misting. The reports are numerous of soaked bathtub floors and occupants. What makes it difficult to analyze the reports is that the BD tents were not seam taped or sealed, and many may have failed to do this. While Epic Malibu is heavy compared to silnylon, especially 15-20D silnylon, or Cuben, it is a polyester, and unlike nylon, when it is punctured by sewing, the holes have none of the self-repairing quality of nylon, and absolutely must be sealed to prevent leakage. (Note: Many other fabrics were Epic treated, so I add the word "Malibu.")
So we can't by sure how much of the major leakage was due to lack of seam sealing; however, some of those reports do affirm that the seams were sealed. Could they have used a PU sealer like Seam-Grip, that would not seal a sil impregnated material like Malibu? Another conundrum.
Those like bradmac, who have no problem with leakage in an Epic Malibu tent, also report much reduced condensation. In attempting to reconcile those reports with the numerous negative ones, there developed a consensus, here anyway, that the effectiveness of the Epic treatment was not consistent, and that this was the only way to explain major leakage experienced by those who properly sealed all exposed seams. Ergo, as already pointed out, BD switched to another WPB. However, that has often been reported as quite fragile, and the weight issue still remains. When most tents were being made of 2.7 oz PU coated nylon, a 1.8 oz material with no need for an inner tent looked pretty good. After silnylon came out, not so much. Although still, adding a net liner under a silnylon canopy of ~1.4 oz pushed the weight above Malibu.
With the arrival of Cuben and 15-20D coated nylon, all that has changed. But unfortunately, these new materials bring with them their own issues.
Agree that wiping down tents is a non-starter in this day and age. But the good results some have had with Malibu show that an absorbent inner layer is not essential for a WPB canopy to work. I have some of the GTX tent material that was used by Early Winters, but it is well over 3 oz in weight per sq. yd. We're making packs now of material around that weight, for heaven's sake.
The inevitable conclusion seems to be that with the current state of the art, the best option is a Cuben or low denier nylon with a sub one oz inner of fabric or net.
I'm using the latter (net) now, experiencing no moisture issues inside the tent, and getting 22.5 sf of floor space under a domed canopy for under 2.5 lbs. total weight.
The next step will be a domed canopy of Cuben or low denier Nylon in a tent that is only partially single wall, and has a clip-in liner for the single wall portion. That way, fabric and net liners can be used inter-changeably. Looked at the Skytex 27 gram, a proprietary PU coated nylon paraglider cloth made by Porcher-Sport of France, that is sub one oz, but it has a low HH. They have new coatings now that may improve that, however. The attraction to the nylon is the ease of seam sealing, its elasticity and therefore resistance to tearing and abrasion, and the ability to hold stitching without the fuss of laminating/taping and clamping. The attraction of the Cuben is the lighter weight, resistance to sagging, and often reported reduced condensation in the more reflective versions. Still haven't decided, but expect to get under 2 lbs either way.