Just a word of warning ... (ok, a few words ...)
I am currently 'playing' with Desdaemona, adding some functionality to her. It's a fairly big change, which has knock-on effects on a few things. Because of what it is, I am treading carefully to make sure that all the affected areas will be correctly handled before 'unleashing' the change.
What does this mean? Well, until fully up and running some commands (!desc, !rsc, etc.) will not always show correct information about slave status of the character being examined. Normally that will just be a simple 'the owner information will not be shown' (as opposed to incorrect owner!). If you happen to see something you think looks wrong please do let me know.
Will this have any effect on collaring? Simple answer is 'no'.