Where has it been explained except on these MBs?.
Is it on the rfl website?.

Does it matter if people at the game or even on TV see the Stobart branding? , are these people going to ring Stobarts on monday and request a price on a few million quids worth of haulage?

No

The Stobarts deal is all about increasing awareness of SL on SKY, nothing else, Stobarts get the exposure but will ultimatly not make millions out of it

Clearly you don't understand as it hasn't been explained at all.

I suspect that the padding etc. is still being prepared and this will be provided to clubs in due course.

The deal was signed only a week in advamce of the season, and these things take time to be produced.

Stobarts deal is only for the title sponsor, so everything that is visible on a game is up for grabs (ball sponsor, post pads, corner flags, officials shirts) is up for grabs, so there won't be any stobart post pads, corner flags etc unless they pay extra for the privilege

Engages sponsorship included all of the above.

Heinz have just signed to provide sponsorship of all clubs shirt sleeves whilst apparently they are discussions ongoing regarding a match officials sponsor

<Insert predictable Specsavers joke here>