I'm sure someone knows the answer to what I'm wondering...

I'm wondering how one of these DIY gear supply pattern underquilts work with a bottom entry hennessy. I really like the simplicity and am leaning towards IX too make a tq/uq for my 3 season gear.

I want to make an asym version but my ambition is far greater than my skill or experience at this point with making gear. It would be a lot more fool proof for me to make an already tried and true simple uq.