Hey guys, newbie here. I backpacked with the RR Friday and Sat., had no problem. Might be a little heavier, but is worth it because it is soooo comfortable.
BTW, got down to 23 in the closest town to where i was camping, so it was probably in the teens where I was. Had 2 pads and space blanket in pad slot, I got chilled about 4AM, so I started 2 hand warmers in my bag, slept like baby the rest of the night.