I'd say in theory a good portion of the way the two products integrate together should work with those production versions, but any type of auto integration functionality is going to fail because the 14.1 installer will not find any reference to the existence of the Service Desk server in the cdb tables (which are tables introduced in 14.1 that help management the overall solution). I will say for certain though that using mis-matched versions has not been tested or certified, and if any failure occurred Support's ability to assist in resolution would be greatly restricted.
All and all it's not something I'd recommend, but it's possible it could work.