I have a few questions regarding a Cleric > Thief dual classed character:

If I start off as a Cleric, and then dual class into a Thief, can I spend proficiency points on non-cleric weapons, such as swords, bows, and daggers?

If so, can I use them before gaining my Cleric levels back (when the character is considered a single classed thief)?

I understand that I can use any weapon I'd like once UAI is chosen as a Thief HLA, but can I ever get proficiency in these weapons?

TIA

yes you can use your thief prof for theif weapons & can use them until you regain the cleric levels. then you lose the use of them until you gain the UAI HLA.