In the same way that we can use /away and /online, etc in conversations to change status

it'd be good if we could do the same for personalised statuses (any pre-set ones which we have)

for example I have one that I use when I'm asleep, to put a {Sleeping} tag next to me name as well as an autoresponse message

I'd like to be able to use /sleep in a conversation to set it to that status

Yes I agree. I have wanted this feature for a while now, never thought to make a thread for it