[But I daresay this would be considered by many to be a "very slovenly" way of speaking.]
There's something real familiar about the system U described, Sim. I think people talk this way in TW too. "Ce/he" (T1, always citation) is used just like in your first set of examples. For the second set, TWese would have "cit/hit". For the third set, I think it's either "cit/hit" or unchecked "cí/hí" -- speaker's choice -- w/ the caveat that this set-up can only be used for small numbers of a thing, class, etc. "Slovenly" ce/he might not come w/ this restriction...
Again, just going off impressions.
I'm not from Metro Manila, I'm from Sydney.
I'm sure there's lots of people that live in Sydney and speak 3+ languages. But somebody from Sydney speaking 3+ languages? Wild!