It sounds like the Italian Communist Party has a better chance of taking over the country in a nasty civil war in the post-war period than the Soviets do of taking all of continental Italy during WWII. I guess the ideal situation is it would happen before Gladio can be set up in any meaningful way, and the Soviets would be nearby to give arms - so, instead of needing Soviet tanks to have rolled through Italy, Soviet tanks rolling through Austria?
Ending up with Austria as a Soviet-puppet buffer state and Italy as an enthusiastically pro-Soviet, but with its own Soviet-style leadership and intellectual cadre, Eastern Bloc member?
Also, if you do have Italian revolutionaries being the ones to create the Red Italy, what if they retained their core leaders after the death of Stalin and leadership change-up in the Soviet Union? What might the impact of having a strongly-tied-with-the-Soviets Italy that still wants to be Stalinist? People on this thread seem to have implied that Italy has more to give to the Soviet Union regarding people with technical skills and so forth than the Soviet Union has to withhold from them unless they have a party purge of the Stalinists; which could make the situation tricky.