I've been a SAHM for more than 20 years and no, I don't get "pocket money" (although every now and then we joke about it - DH tries to wind me up by mentioning the concept).
We have a joint account and also individual bank accounts. In practice, we use the joint account for pretty much evetything. But I think it's best to have a good bit of money in individual accounts with different banks as well, if only in case of anything going wrong with the main account.
The vast majority of our expenses are joint ones (household, kids, holidays, etc). Each of us also spends on stuff which is just for ourselves. But neither of us has a set amount for this. We have fairly similar attitudes to spending; we might get some nice luxuries, but we can afford it and neither of us is going to do anything stupid.