Apologies for putting another view on things but many keepers have branches in their Royal setups as they will most definitely climb them in the evenings . They will even chill-out in them for a while on occasion and if course climbing is great exercise for them .
I've even got one Royal , my two year old Pastel who strike feeds from the branches and eats up in them - if he's up there when it's feeding time .
Certainly worth a try as they can simply be removed if needed .