Hi Mikkel
Nice comparison, I intend going down the C&L chair glued to ply construction method in EM. I made up some short track panels as a tryout some nine months or so ago and they have been subjected to being moved around the house as I have been decorating room after room, their storage places have been far from ideal. Only damage sustained so far was a couple of chairs came unstuck. The damage was probably a short fall in my skills as opposed to the components. A point I don't think raised yet probably as it is a question of construction as opposed to appearance, is it wise to stain the sleepers first or does this give the adhesive problems, I stained mine first with a blend of different coloured water based wood stains which seems to work fine, just wandered if there are any other thoughts on the matter.
Thanks for posting the comparison
All the best
Martin