TLDR: When playing as police, sometimes I like to go off duty to go do fuel runs, and it would be convenient if at the locker room I could put on a set of civ clothes for when I go to clock out, rather than having to buy them again.
Hell yes, this is so needed. A few other servers I've played on allow you to save outfits, would be very helpful for more immersive roleplay! +1 from me.
This will be a feature of the clothing and customisation update. Outfits based on clothing you have purchased (full clothing rework is already fully underway and most of the fiddly bits is already done - as soon as shop stuff is done and tested - within coming days, clothing is a priority)