OK, preliminary report after one night of use in freezing or below temperatures - my digital thermometer went on the fritz, so i don't know just how cold it was, but it was 45 degrees at around 7:00 pm and the condensation in our tarptent froze during the night.
the quilt did very well, but our system needs some tweaks. this was also our first time using the POE Max-Thermo full-length pads, and the pads themselves presented some problems. Unless the pad was totally covered by one of us, the bare end of the pad seemed to get very cold and transfer that cold up to our torsos. this may be because the MaxThermo is mostly full of air - the synthetic insulation in it didn't seem to do anything to keep the pad warm. our old Thermarest LEs (heavy but COMFY & warm) seem to still be superior.
i definitely need to make some kind of heavier insulated headwear, most likely down balaclavas. i had to pull my head in under the quilt, which was no problem since it's over 6 feet long and i'm 5'8". my 6' husband is also able to get his head inside easily. he has requested that i make a draft tongue as well, similar to the one offered by Nunatak. i never noticed any draft problems, but he says he did.
i've already cut out fabric for the first balaclava. i was given an old Frostline kit by a lovely lady over on TLB and i'm using their pattern for the first one, but i already think that for the second one i'm going to make some alterations to the design, so that I can cinch the opening down over my eyes - just leaving my nose & mouth exposed for breathing. i'm a cold sleeper and need to bundle up tight.
and i hope that today i will get the prototype fabric cut out for my son's sleeping bag. ugh, i need to get that cracking. we're going to the ADZPCTKO and it gets cooooold at night there!