Hi probability that there will be very few offensive holding calls as umpire is from Vinovich's crew as well.
Wild card is going to be whether or not they allow for mugging WRs until the ball is thrown as only a side judge is from Vinovich's crew.

[www.espn.com]

Basically Vinovich's crew during the regular season allowed for mugging WRs as there zero illegal contact penalties thrown this season.
Overall, the number of penalties called by his crew was extremely low.
No surprise that his crew called a lot of Sunday night games as the NFL wants to see a more free flowing game vs one bogged down by penalties.

So, Rams should prepare to be held and should prepare to be mugged.
At the same time, should also think about mugging NO WRs. Play tight coverage at the line.

My concern is the lack of holding calls.. really neutralizes the better defensive line and then puts more pressure on the secondary.