Has anyone fitted an OTR foam air filter to an XTR?

Have DNA's fitted, but I am planning to head out around the Strzelecki and on further. Guess it's a dirt bike background, but I would prefer foam.

The alternative is back to paper and carry a spare? I haven't attacked the airbox or removed the snorkel for the reasons above.

My concern stems from a recent ride where I came across a cattle truck travelling in the same direction on a very dust road. I could have stopped and waited, but I was drawn in by the tell-tale dust eddy's until I was in a dust cloud for a few k's. I also encountered more traffic along the 60 odd km's of this road.

Both filters, as was performance, were noticeably affected by the time I arrived home and there was some signs of dust in the airbox.

I guess the Pipercross is another alternative?

Input anyone?