Sounds from your post that you are ready to accept Cuben in shelters, like the good looking one Matt posted, but still have reservations about its appearance in packs.
I was in the same place, so bought some of the OD stuff for packs. Although beauty is in the eye of the beholder, it gave me some pause, also.
The Zpacks site says, "...The material eventually begins to fray and separate from excessive sun exposure and general use. This is what limits the lifespan to 2500 miles or so. You will likely have duct tape on some frayed areas by the end of a long thru-hike."
The BPL review of the Blast 18 pack says, "... (I found seams starting to separate in response to the all day stress of hiking with 35-lb loads), and the fabric is more subject to punctures from sharp things (e.g. thorns and deadfall), more so than woven nylons such as the 210 Dyneema grip ripstops ..."
I also noticed that the creases in the mylar laminate from folding the Cuben material remained indefinitely after it was unfolded and hung.
That all gave me some more pause, so took a second look at the 5 oz. Xpac material from Rockywoods. Unlike PU coated nylons, water would not squeeze through it. I had already decided to use it for the top pocket and upper and lower portions of the backpanel of a pack, with the much lighter 1.5 oz. Cuben for the main bag; but after crunching some numbers, found that the Xpac would add only a total of 1.75 ounces to the pack weight. And that's not counting the added weight of reinforcements bonded to the Cuben at stress points, such as strap and loop attachment points, and possibly seams as well.
The Xpac is a diamond gridstop, looks nice, and comes in several colors, so I decided to use it for the whole pack, except the mesh in the middle portion of the back panel and the bottle pockets, and the 70 denier silnylon (1.9 oz nylon weighing 2.4-2.5 oz/sq/yd with the coating) for the inside backpanel, as the design needs that panel to be slightly elastic, and it will not be exposed to as much abrasion.
If you are thinking of buying a pack ready made, comparison of the total weights might be more useful than going with Cuben for its own sake. The pack manufacturers appear to be using some very durable lightweight materials like Xpac. John Donewar ("Newton") posted on MYOG a pack he made of Xpac weighing around 16 oz, which is pretty light. Hope all this is useful to you in making decisions about pack materials.