Bristol
From a getting in the air point of view keeping them rigged is best.Nothing worse than spending an hour or so rigging it up and then the weather changes so you cant fly.Also lifting the wing up on to the trike can be challenging if its blowing a bit unless you can rig out of the wind.
Only bad points for keeping them rigged that I can see is getting it damaged whilst in your hangar.Careless handling by other flyers can often result in hangar rash issues such as bent wing battens split fabric and even dints in your pod.You have to rely on your collegues having respect for your kit when shifting it about.When I first started you could always tell who hadnt flown for a while as it would be their trike at the back of the hangar.I used to dread it if Id not flown for a bit.It was always a good incentive to keep current!
If your in a large hangar its not such an issue but at small Farm Strips available space to manoever is at a premium.