Furniture: Sofa Shopping

so, i've been sofa shopping online.  finding just the right lines, seat depth, construction, fabric, and overall aesthetic is tricky.  i think i finally found one that would fit perfectly in my home, if i can convince my husband.  i might have to do a drive by pottery barn and see if they have one on the showroom.  i want to sit on it and kick my feet up.  maybe if it's empty in the store, lay down on it.  seabury sofa by pottery barn.  kiln dried hardwood frame and it's 41" deep!  i like the low arms and i'm pretty sure the seat and back cushions are detachable.  thoughts?