I recently received my 64" WWM single layer and so far am very impressed. I wanted something light and simple to augment a DB 68 double layer; call it my ultralight solution. So far it's fitting the bill perfectly. I ordered the knottymod (very cool) and side tieout loops; however, trying to configure for use without side tieouts for sake of simplicity. Also playing with an adjustable ridgeline.
For a one-bag solution, the WWM and a HG 40* top/underquilt combo all fit (still configured) in a medium-size Bishop or waterproof compression bag. Easy one-step setup/takedown. Weight for the combo is just over three pounds and in compression bag, packs down to about an 8" by 10" package. After reading so much about bikepacking, I envision this tied under my handlebars; tarp and other bare essentials in a separate enclosure on frame, plus a few items in my hydropack. My almost-weightweenie bike is a Specialized FSR Skunkworks with just about every component replaced with ultralight stuff (over many, many years). Trail time!
Comfort: I'm 5'10 and 180lbs and was curious how the single layer would stretch and conform, especially after sleeping in the wicked-cozy 1.0 dl Dangerbird. Slept in the WWM last night and gotta write that it is very comfortable, but in a slightly different way. The DB, with the tieout arrangements, less stretch, and bit more width, is a bit more roomy feeling. Sans the tieouts and with more stretch, the WWM feels a bit more narrow along the bodyline, but no sense of shoulder squeeze; just a tiny amount of pressure (not uncomfortably speaking) against my inside knee. The WWM does seem to conform well to my body and hence, perhaps more supportive in the lumbar region of my back (hard to put into words); but so far, finding the stretch to be a comfort feature. Need more time to compare the two. Went to sleep on back; woke up in fetal (passed both tests). Sawed some major logs.
UQ: I'd modified the lines on my UQ to better fit the longer wider DB, and this same mod makes for a great fit on the WWM (both 11' long). Using Dutch plastic UQ hooks in a few places to shore things up. Was in the low 60s last night; supposed to be in the mid-40s tonight. Test number two coming up.
I also ordered a NanoBuginator; really liking the bottom entry and lack of zipper. Entrance and exit are both easy, and the larger size/length allows the net to expand more and not reduce overall lay width (hope that makes sense).
Big thanks to the boyz at BIAS; great product at a great price.