What temps have you had it down in? It kept you comfortably warm each time?
I'm a poundhogger as penance for being cheap, as I can be at least, so weight's generally not a huge issue. It looks about the size of my marmot SB so I was hoping that I'd just be able to exchange them and keep themarmot at home and bring this thing. You get by with using just this or do you need a TQ withit? Or could you get by with a fleece sleeping bag for blanket?