I would love to hear this as well...
Since these Deltas are fully bell-and-whistled in the base configuration (except for small things like power jacks option, or extra solar panels) there isn't really any packages that they can add on over the advertised UVW! So I had a feeling their weights are far more realistic, even if slightly higher, than other manufacturors like Grand Design or Forest River brochure weights.
Since our tongue weights were shockingly high on our past 2 Imagines, when compared to the brochure, I wanted to weigh the tongue of our 294RK before purchasing. I brought my tongue scale, and with 1 battery, no propane, and 50A cord resting in the underbelly, it was ~850#. I lifted the battery and it was a hair over 800#. The brochure/web page says 801# for this model!
Given how accurate the advertised hitch weight spec was, I think the dry UVW will be accurate as well! I'm excited to take it to the CAT scales and see numbers without sticker shock this time.