Does a strange version make a transaction non-standard?

[Taras]

If I make a transaction with 0x12345678 or some arbitrary number as the version, with the transaction otherwise being perfectly standard, will the strange version make it non-standard? Is there any reason/precedent for nodes or miners to reject a transaction based on having a funny version?

[achow101]

Transactions that are not version 1 or version 2 are non-standard.