I'm looking into some insulation options and I like the look of the JRB quilts.
So my questions are...

#1: Can I attach a Hudson River to a HH Explorer Ultralite as un underquilt?
#2: If so, can I survive the winter using 2 Hudson rivers, 1 as an underquilt and 1 as a top quilt? (without pads or anything)

Winter around here averages out somewhere around 30 degrees.