If just a sleeve, then the way 300.15[C] is worded, it’s okay to do this with any cable type as long as there are fittings on the ends of the EMT to protect the cable from abrasion. I’ve used those plastic push-on bushings made by Arlington for that purpose before.
But, at least IMO, if actually changing wiring methods I feel that at least a changeover connector on the end of the EMT should be used as allowed in 300.15[F]. This may be up for debate though.
