When I wanted to add traditional bows to have in my bow shop I checked with several bower and found all said one thing, have a bow stringer given to all that buy a bow from you. That most breakage of good bows are caused by stringing a bow without a stringer.
All new bows due to the materials being used can be left strung for long periods without taking a set or loss of poundage.
Matin archery even said one guy had a bow strunk for over 20+ years without a loss of a oz on bow peak weight as measured at 28 inch draw. They said he only would unstring the bow to change to new bow strings every other year...
So I keep all my in stock bows strung, and hung from 2 pegs by the bow string. I take them down after xmas sales etc...
Bill