Honestly, the USMC should switch to the Army method of camo out rolling.

It makes the roll look better (eliminating your concern) and has been proven to be superior in case of CRBN attack (you can roll down the sleeves much faster).

The Army's timing of reintroducing camo out rolling is also quite interesting as it coincides with several ISIL chemical attacks, specifically with blister agents like sulfur-mustard in what at the time was not considered a chemical warfare environment .

Gen. Mark Milley approved "camo out roll" Sep. 27, 2016

Mustard Gas attack on USMC near Mosul Sep. 23, 2016

The timing is either one hell of a coincidence or directly related. My guess is the latter, especially given that Milley's memo had significant portions redacted, which is odd for something so seemingly benign as saying "you can roll your sleeves differently".