I doubt you'll have any problems since dealerships leave snow on them without issue. I'd worry about falling off or damaging the roof or a vent\cover by whacking it with a broom or snow rake. Your choice. Be careful.
2010 Cedar Creek 5th Wheel 34SATS "The Beast"
2006 Ford F350 Lariat 6.0L Diesel
2003 Harley Heritage Softail "Hogzilla"
1988 Harley Softail Custom "The Fireman"
1986 Marriage to "Wifey" (patience of a saint)