You cannot transfer the block without segwit data to supporting full node systems. Older systems don't get it, but it doesn't matter if they get it or not as they wouldn't enforce any rules with it. I think your question is actually about old systems, in which case the transmission part is a distraction.
I will pass the block without segwit data to "old" notes.
The SPV-miners are interested in receiving 256-bit hash as fast as possible to switch their hashpower to new height.
This is "cheating" for increasing their total incomes. And they actually do it today.
Old software indeed doesn't necessarily verify all the rules that are at play: this is unavoidable, since you cannot even know potentially all the rules that are at play as miners could be enforcing ones no one but they know about. The same holds for any rule addition, like P2SH, or CLTV, or CSV.
With segwit there will be other bets in this game.
Today the risk is "not to earn 25+ btc reward" and the winning is "earn 25+ btc"
Tomorrow the risk will be "not to earn 12.5 btc" and the winning is "take all amounts from top-1000 utxo"
(As an aside, segwit would be in 0.12.2/0.12.3; and potentially 0.11.x too though it looks like there isn't demand for it)
I mean the nodes which do not upgrade to segwit. Exact version numbers do not matter.
For example, I will pass my block without segwit data to bc.i